Nose sensor

ABSTRACT

A patient monitor can noninvasively measure a physiological parameter using sensor data from a nose sensor configured to be secured to a nose of the patient. The nose sensor can include an emitter and a detector. The detector is configured to generate a signal when detecting light attenuated by the nose tissue of the patient. An output measurement of the physiological parameter can be determined based on the signals generated by the detector. The nose sensor can include an inner prong and an outer prong to assist the nose sensor in securing to a patient&#39;s nose. The detector can be coupled to an inner post of the inner prong and can be configured to secure to an interior or exterior portion of the patient&#39;s nose.

INCORPORATION BY REFERENCE TO ANY PRIORITY APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.15/955,500, filed Apr. 17, 2018, titled NOSE SENSOR, which claims thebenefit of the U.S. Provisional Application No. 62/486,886, filed Apr.18, 2017, titled NOSE SENSOR. The entire contents of theabove-identified patent applications are incorporated by referenceherein and made a part of this specification.

TECHNICAL FIELD

In general, the present disclosure relates to a wearable patientmonitoring device, and methods and apparatuses for monitoring apatient's physiological information using the device. More specifically,the present disclosure relates to the connection of a patient monitoringdevice to a patient's nose.

BACKGROUND

Hospitals, nursing homes, and other patient care facilities typicallyinclude patient monitoring devices at one or more bedsides in thefacility. Patient monitoring devices generally include sensors,processing equipment, and displays for obtaining and analyzing a medicalpatient's physiological parameters such as blood oxygen saturationlevel, respiratory rate, pulse, and a myriad of other parameters, suchas those monitored on commercially available patient monitors fromMasimo Corporation of Irvine, Calif. Clinicians, including doctors,nurses, and other medical personnel, use the physiological parametersand trends of those parameters obtained from patient monitors todiagnose illnesses and to prescribe treatments. Clinicians also use thephysiological parameters to monitor patients during various clinicalsituations to determine whether to increase the level of medical caregiven to patients.

Examples of non-invasive patient monitoring devices include pulseoximeters. Pulse oximetry is a widely accepted noninvasive procedure formeasuring the oxygen saturation level of arterial blood, an indicator ofa person's oxygen supply. A pulse oximeter generally includes one ormore light sources transmitting optical radiation into or reflecting offthrough a portion of the body, for example a digit such as a finger, ahand, a foot, a nose, an earlobe, or a forehead. The one or more lightsources can emit radiation at a plurality of wavelengths including, one,two, four, eight, twelve, sixteen or more different wavelengths, or anynumber therebetween. After attenuation of the radiation by tissue andfluids of the portion of the body, one or more photodetection devicesdetect the attenuated light and output one or more detector signalsresponsive to the detected attenuated light. The oximeter may calculateoxygen saturation (SpO₂), pulse rate, a plethysmograph waveform,perfusion index (PI), pleth variability index (PVI), methemoglobin(HbMet), carboxyhemoglobin (HbCO), total hemoglobin (HbT), glucose,and/or otherwise, and the oximeter may display on one or more monitorsthe foregoing parameters individually, in groups, in trends, ascombinations, or as an overall wellness or other index. An example ofsuch an oximeter, which can utilize an optical sensor described herein,are described in U.S. application Ser. No. 13/762,270, filed Feb. 7,2013, titled “Wireless Patient Monitoring Device,” U.S. application Ser.No. 14/834,169, filed Aug. 24, 2015, titled “Wireless Patient MonitoringDevice,” and U.S. application Ser. No. 14/511,974, filed Oct. 10, 2014,titled “Patient Position Detection System,” the disclosures of which arehereby incorporated by reference in their entirety. Other examples ofsuch oximeters are described in U.S. application Ser. No. 09/323176,filed May 27, 1999, titled “Stereo Pulse Oximeter,” now U.S. Pat. No.6,334,065, the disclosure of which is hereby incorporated by referencein its entirety.

In noninvasive devices and methods, a sensor is often adapted toposition a portion of the body proximate the light source and lightdetector. In one example, noninvasive sensors often include aclothespin-shaped finger clip that includes a contoured bed conforminggenerally to the shape of a finger. An example of such a noninvasivesensor is described in U.S. application Ser. No. 12/829352, filed Jul.1, 2010, titled “Multi-Stream Data Collection System for NoninvasiveMeasurement of Blood Constituents,” now U.S. Pat. No. 9,277,880, thedisclosure of which is hereby incorporated by reference in its entirety.In another example, noninvasive sensors can include one or more sensingcomponents, such as the light source and/or the photodetectors on anadhesive tape, such as described in U.S. application Ser. No.13/041,803, filed May 7, 2011, titled “Reprocessing of a physiologicalsensor,” now U.S. Pat. No. 8,584,345, the disclosure of which is herebyincorporated by reference in its entirety.

The patient monitoring devices can also communicate with an acousticsensor comprising an acoustic transducer, such as a piezoelectricelement. The acoustic sensor can detect respiratory and other biologicalsounds of a patient and provide signals reflecting these sounds to apatient monitor. An example of such an acoustic sensor, which canimplement any of the acoustic sensing functions described herein, isdescribed in U.S. application Ser. No. 12/643,939, filed Dec. 21, 2009,titled “Acoustic Sensor Assembly,” now U.S. Pat. No. 8,771,204 and inU.S. application Ser. No. 61/313,645, filed Mar. 12, 2010, titled“Acoustic Respiratory Monitoring Sensor Having Multiple SensingElements,” the disclosures of which are hereby incorporated by referencein their entirety. An example of such an acoustic sensor is alsodescribed in U.S. application Ser. Nos. 13/762,270, 14/834,169, and14/511,974 referenced above.

SUMMARY

For purposes of summarizing the disclosure, certain aspects, advantagesand novel features of several systems have been described herein. It isto be understood that not necessarily all examples of the presentdisclosure are disclosed herein. Thus, the systems disclosed herein canbe embodied or carried out in a manner that achieves or optimizes oneadvantage or group of advantages as taught herein without necessarilyachieving other advantages as can be taught or suggested herein.

A noninvasive physiological monitoring device can be configured secureto a nose of a patient. The device can include an inner prong configuredto be positioned on one of an inner or outer side of a nose. The innerprong can include an inner post. The monitoring device can include anouter prong configured to be positioned on one of an inner or outer sideof a nose. The outer prong can include a first outer post and a secondouter post. The monitoring device can include a detector configured tobe secured to one of an inner or outer wall of the nose of the patient.The monitoring device can include one or more light emitters configuredto be secured to the other of the inner and outer wall of the nose ofthe patient. The monitoring device can include a coupling portionconfigured to space the inner prong from the outer prong, wherein thecoupling portion provides support to the inner and outer prongs tosecure the device to the nose of the patient. The first and second outerposts of the outer prong can be curved to conform to a portion of thenose of the patient. The inner prong can be curved to conform to aportion of the nose of the patient. The first outer post can have afirst radius of curvature and a first curve direction, and the secondouter post can have a second radius of curvature and a second curvedirection, and the first radius of curvature can be equal to the secondradius of curvature and the first curve direction can be the same as thesecond curve direction. The inner prong can be curved along a thirdradius of curvature and in a third direction, and the third radius ofcurvature can be equal to the first and second radius of curvatures andthe third direction can be the same as the first and second curvedirections. The outer prong of the monitoring device can be U-shaped.The inner prong can include an intermediate region and the outer prongcan include an intermediate region. The intermediate region of the innerprong can be curved such that the intermediate region of the inner prongextends towards the intermediate region of the outer prong. Themonitoring device can include an adhesive configured to adhere theemitter or the detector to an outer surface of the nose of the patient.The monitoring device can include a lens proximate to the detectorconfigured to focus light into the detector. The lens can comprise asimple lens. The monitoring device can include a diffuser positionedproximate to the emitter and configured to diffuse light emitted by theemitter prior to entering tissue of the nose of the patient. Thediffuser can comprise silicone. The inner post can be coupled to thedetector. The inner post can be substantially rigid. The emitter caninclude a liner configured to cover the adhesive of the emitter when theemitter is not in use. The inner prong can include an inner base, andthe outer prong further can include an outer base. The coupling portioncan be circular. The monitoring device can include a first centrallongitudinal axis of the inner post that is aligned with a secondcentral longitudinal axis of the inner prong, wherein the first outerpost of the outer prong is spaced from the second outer post of theouter prong such that the first outer post has a first side wall that ispositioned adjacent a second side wall of the outer prong and the secondouter post has a third side wall that is positioned adjacent to a fourthside wall of the outer prong that is positioned opposite the second sidewall of the outer prong. The monitoring device can include a firstcentral longitudinal axis of the inner post is aligned with a secondcentral longitudinal axis of the inner prong, wherein the inner postincludes a first side wall and a second side wall, wherein the firstouter post and the second outer post are spaced laterally away from oneanother along the outer prong such that the first outer post ispositioned laterally outward from the first side wall of the inner postand the second outer post is positioned laterally outward from thesecond side wall of the inner post. The inner post can be configured toapply pressure to an inner portion of the nose of the patient, and thefirst outer post can be configured to apply pressure to a first outerportion of the nose of the patient that is spaced laterally outwardlyfrom the inner portion of the patient's nose, and the second outer postcan be configured to apply pressure to a second outer portion of thenose of the patient that is spaced laterally outwardly from the innerportion of the patient's nose. The inner post can be configured to applypressure to a portion of the nose of the patient and the portion of thenose of the patient can be configured to be positioned between the firstouter post and the second outer post when the inner prong and the outerprong are secured to the patient. The coupling portion can include theinner base and the outer base, wherein the inner base includes a topsurface and the outer base includes a top surface. The inner post canextend from a center of the inner base. The first outer post can bespaced apart from the second outer post, and the first outer post andthe second outer post can extend from the outer base. The inner post canbe wider than the first outer post and the second outer post. The firstprong can be parallel to the second prong. The coupling portion cancomprise a joint configured to rotatably connect the inner prong and theouter prong, the joint including a first joint portion coupled to theinner prong and a second joint portion coupled to the outer prong,wherein the first joint portion has a first slot and the second jointportion has a second slot, the first slot and the second slot configuredto at least partially receive a pin. The monitoring device can include abiasing member configured to bias the inner prong from the outer prong.The biasing member can comprise a spring. The monitoring device caninclude a diffuser positioned proximate to the emitter and configured todiffuse light emitted by the emitter prior to entering tissue of thenose of the patient, and a lens proximate to the detector configured tofocus light into the detector.

A method of calculating a measurement of physiological parameters of apatient can include: transmitting light, by an emitter of a nose sensor,of at least first and second wavelengths through tissue of a nose of apatient to a detector; detecting, by the detector of the nose sensor,light attenuated by the tissue of the nose of the patient; generating anoutput signal, by the nose sensor, based on the light detected at thenose of the patient; and determining the measurement of thephysiological parameters, by the nose sensor, based on the outputsignal. The nose sensor can include: an inner prong configured to bepositioned on one of an inner or outer side of a nose, the inner prongincluding an inner post; an outer prong configured to be positioned onone of an inner or outer side of a nose, the outer prong including afirst outer post and a second outer post wherein one of the detector oremitter is coupled to one of the inner or outer prongs, the detectorconfigured to be secured to a wall of the nose of the patient. The nosesensor can include a coupling portion configured to space the innerprong from the outer prong, wherein the coupling portion providessupport to the inner and outer prongs to secure the device to the noseof the patient. The nose sensor can further include a diffuser and themethod can further comprise diffusing the light transmitted by theemitter of the nose sensor prior to entering the tissue of the nose ofthe patient. The nose sensor can further include a lens and the methodcan further comprise focusing the light transmitted by the emitter ofthe nose sensor into the detector after the light has passed through thetissue of the nose of the patient. The inner prong can include anintermediate region and the outer prong can include an intermediateregion. The intermediate region of the inner prong can be curved suchthat the intermediate region of the inner prong extends towards theintermediate region of the outer prong. The method can include using anadhesive to adhere either the emitter or detector to the nose of thepatient, wherein the adhesive is configured to adhere to an outersurface of the nose of the patient. The method can include removing aliner from the adhesive before adhering either the emitter or detectorto the nose of the patient. The first and second outer posts of theouter prong can be curved to conform to the nose of the patient. Thefirst outer post can have a first radius of curvature and a first curvedirection, and the second outer post can have a second radius ofcurvature and a second curve direction, the first radius of curvaturebeing equal to the second radius of curvature and the first curvedirection being the same as the second curve direction. The inner prongcan be curved along a third radius of curvature and in a thirddirection, wherein the third radius of curvature is equal to the firstand second radius of curvatures and the third direction is the same asthe first and second curve directions. The coupling portion can includea joint configured to rotatably connect the inner prong and the outerprong, the joint including a first joint portion coupled to the innerprong and a second joint portion coupled to the outer prong, wherein thefirst joint portion has a first slot and the second joint portion has asecond slot, the first slot and the second slot configured to at leastpartially receive a pin. The method can include biasing the inner prongfrom the outer prong with a biasing member. The biasing member cancomprise a spring. The detector of the nose sensor can be coupled to theinner post of the inner prong and configured to be secured to an innerwall of the patient's nose. The detector can be coupled to a first endof a flexible circuit and the emitter can be coupled to a second end ofthe flexible circuit, wherein the method further comprises adhering theemitter to an outer wall of the patient's nose. The first and secondouter posts of the outer prong can have a substantially similar radiusof curvature and curve in the same direction, thereby permitting theouter prong to conform to a portion of the nose of the patient. Theinner prong can be curved along a second radius of curvature and in asecond direction substantially similar to the radius of curvature andcurve direction of the first and second outer posts of the outer prong.The outer prong can be U-shaped.

A noninvasive physiological monitoring device configured to secure to anose of a patient can include an emitter configured to emit lightthrough the nose of the patient towards a detector, wherein the detectoris configured to detect light attenuated through the nose of thepatient. The emitter can be configured to emit light of at least a firstand second wavelength. The monitoring device can include an adhesiveconfigured to adhere the emitter to an outer surface of the nose of thepatient. The monitoring device can include a liner configured to coverthe adhesive of the emitter when the emitter is not in use. Themonitoring device can include a lens configured to focus light into thedetector. The lens can comprise glass, plastic, or both glass andplastic. The lens can comprise a simple lens. The lens can comprise onelayer of material selected from the group consisting of glass andplastic. The lens can comprise at least two layers. The at least twolayers can comprise a material selected from the group consisting ofglass and plastic. The lens can comprise two or more simple lensesarranged about a common axis. The monitoring device can include adiffuser configured to diffuse light emitted by the emitter prior toentering tissue of the nose of the patient. The diffuser can be islocated proximate to the emitter. The diffuser can comprise silicone.The diffuser can comprise white silicone, or alternatively, blacksilicon. The diffuser can comprise acrylic, plastic, and/or glass. Thediffuser can comprise two or more layers. Each of the two or more layerscan comprise a different material, or alternatively, the same materialor materials. The monitoring device can include a transmitter configuredto transmit an output signal from the detector. The transmitter cancomprise a cable configured to connect the noninvasive physiologicalmonitoring device to at least one of a monitor or a display. Thetransmitter can comprise a wireless transmitter. The wirelesstransmitter can be configured to operate on a protocol selected from thegroup consisting of Wi-Fi, Bluetooth, ZigBee, Z-wave, radio frequency,cellular telephony, infrared, and satellite transmission. The monitoringdevice can include: an inner prong configured to be positioned on one ofan inner or outer side of a nose; and an outer prong configured to bepositioned on one of an inner or outer side of a nose, wherein thedetector is coupled to one of the inner or outer prongs and configuredto be secured to one of the inner or outer side of the nose. The innerprong can be parallel, non-parallel, or perpendicular to the outerprong. The emitter can be coupled to a first end of a flexible circuitand the detector can be coupled to a second end of the flexible circuit,and wherein a first portion of the flexible circuit is contained withinthe noninvasive physiological monitoring device and a second portion ofthe flexible circuit is not contained within the noninvasivephysiological monitoring device, wherein the second portion is closer tothe first end of the flexible circuit than to the second end. The innerprong can include an inner post and the outer prong can include a firstouter post and a second outer post. The monitoring device can include afirst central longitudinal axis of the inner post aligned with a secondcentral longitudinal axis of the inner prong, wherein the first outerpost of the outer prong is spaced from the second outer post of theouter prong such that the first outer post has a first side wall that ispositioned adjacent a second side wall of the outer prong and the secondouter post has a third side wall that is positioned adjacent to a fourthside wall of the outer prong that is positioned opposite the second sidewall of the outer prong. The monitoring device can include a firstcentral longitudinal axis of the inner post aligned with a secondcentral longitudinal axis of the inner prong, wherein the inner postincludes a first side wall and a second side wall, wherein the firstouter post and the second outer post are spaced laterally away from oneanother along the outer prong such that the first outer post ispositioned laterally outward from the first side wall of the inner postand the second outer post is positioned laterally outward from thesecond side wall of the inner post. The inner post can be configured toapply pressure to an inner portion of the nose of the patient, andwherein the first outer post can be configured to apply pressure to afirst outer portion of the nose of the patient that is spaced laterallyoutwardly from the inner portion of the patient's nose, and wherein thesecond outer post is configured to apply pressure to a second outerportion of the nose of the patient that is spaced laterally outwardlyfrom the inner portion of the patient's nose. The inner post can beconfigured to apply pressure to a portion of the nose of the patient andthe portion of the nose of the patient can be configured to bepositioned between the first outer post and the second outer post whenthe inner prong and the outer prong are secured to the patient. Thedetector can be coupled to the inner post. The outer prong can include athird outer post comprising a flexible flap coupled to the emitter. Thefirst and second outer posts of the outer prong can be curved to conformto a portion of the nose of the patient. The inner prong can be curvedto conform to a portion of the nose of the patient. The first outer postcan have a first radius of curvature and a first curve direction, andthe second outer post can have a second radius of curvature and a secondcurve direction, the first radius of curvature being equal to the secondradius of curvature and the first curve direction being the same as thesecond curve direction. The inner prong can be curved along a thirdradius of curvature and in a third direction, the third radius ofcurvature being equal to the first and second radius of curvature. Theouter prong can be U-shaped. The inner prong can include an inner base,and the outer prong can include an outer base. The inner prong caninclude an intermediate region and the outer prong can include anintermediate region. The intermediate region of the inner prong can becurved such that the intermediate region of the inner prong extendstowards the intermediate region of the outer prong. The monitoringdevice can include a coupling portion configured to space the innerprong from the outer prong, wherein the coupling portion providessupport to the inner and outer prongs to secure the device to the noseof the patient. The inner prong can include an inner base, and the outerprong can include an outer base. The inner post can be wider than thefirst outer post and the second outer post. The coupling portion caninclude the inner base and the outer base and the inner base can includea top surface and the outer base can include a top surface. The innerpost can extend from a center of the top surface of the inner base. Thefirst outer post can be spaced apart from the second outer post on thetop surface of the outer base, and the first outer post and the secondouter post can extend from the top surface of the outer base. Themonitoring device can include a joint configured to rotatably connectthe inner prong and the outer prong, the joint including a first jointportion coupled to the inner prong and a second joint portion coupled tothe outer prong, wherein the first joint portion has a first slot andthe second joint portion has a second slot, the first slot and thesecond slot configured to at least partially receive a pin. Themonitoring device can include a biasing member configured to bias theinner prong from the outer prong. The biasing member can comprise aspring. The spring can be cylindrical or non-cylindrical. At least oneof the outer prong or the inner prong can comprise a recess configuredto secure at least a portion of the spring. At least one of the outerprong or the inner prong can comprise two protruding rims configured tosecure at least a portion of the spring. The two protruding rims can beconfigured to secure to at least a portion of the spring by a snap-fit,press-fit, and/or friction-fit. The spring can include coils, a firstleg, and a second leg. The first leg of the spring can extend in thesame direction, or alternatively, an opposite direction as the secondleg. The first leg of the spring can be parallel, non-parallel, orperpendicular to the second leg. The coupling portion can comprise ajoint configured to rotatably connect the inner prong and the outerprong, the joint including a first joint portion coupled to the innerprong and a second joint portion coupled to the outer prong, wherein thefirst joint portion has a first slot and the second joint portion has asecond slot, the first slot and the second slot configured to at leastpartially receive a pin.

A method of calculating a measurement of physiological parameters of apatient can comprise: transmitting light, by an emitter of a nosesensor, of at least first and second wavelengths through tissue of anose of a patient to a detector; detecting, by the detector of the nosesensor, light attenuated by the tissue of the nose of the patient;generating an output signal, by the nose sensor, based on the lightdetected at the nose of the patient; and determining the measurement ofthe physiological parameters, by the nose sensor, based on the outputsignal. The method can include adhering the emitter with an adhesive toan outer surface of the nose of the patient. The method can includeremoving a liner from the emitter before adhering the emitter to theouter surface of the nose of the patient. The method can includefocusing light into the detector with a lens. The lens can compriseglass, plastic, or both glass and plastic. The lens can comprise asimple lens. The lens can comprise one layer of material selected fromthe group consisting of glass and plastic. The lens can comprise atleast two layers. The at least two layers can comprise a materialselected from the group consisting of glass and plastic. The lens cancomprise two or more simple lenses arranged about a common axis. Themethod can include diffusing light emitted by the emitter prior toentering the tissue of the nose of the patient with a diffuser. Thediffuse can be located proximate to the emitter. The diffuser cancomprise silicone. The diffuser can comprise white silicone, blacksilicone, acrylic, glass, and/or plastic. The diffuser can comprise twoor more layers. Each of the two or more layers of the diffuser cancomprise the same or different materials. The method can includetransmitting the measurement of physiological parameters by the nosesensor based on the output signal with a transmitter. The transmittercan comprise a cable and/or a wireless transmitter. The wirelesstransmitter can be configured to operate on a protocol selected from thegroup consisting of Wi-Fi, Bluetooth, ZigBee, Z-wave, radio frequency,cellular telephony, infrared, and satellite transmission. The nosesensor can include: an inner prong configured to be positioned on one ofan inner or outer side of a nose; and an outer prong configured to bepositioned on one of an inner or outer side of a nose, wherein thedetector is coupled to one of the inner or outer prongs and configuredto be secured to a wall of the nose of the patient. The inner prong canbe parallel, non-parallel, or perpendicular to the outer prong. Theemitter can be coupled to a first end of a flexible circuit and thedetector can be coupled to a second end of the flexible circuit, whereina first portion of the flexible circuit is contained within thenoninvasive physiological monitoring device and a second portion of theflexible circuit is not contained within the noninvasive physiologicalmonitoring device, and the second portion is closer to the first end ofthe flexible circuit than to the second end, wherein the method furthercomprises securing the emitter to the nose of the patient. The innerprong can include an inner post and the outer prong can include a firstouter post and a second outer post. The nose sensor of the method caninclude a first central longitudinal axis of the inner post aligned witha second central longitudinal axis of the inner prong, wherein the firstouter post of the outer prong is spaced from the second outer post ofthe outer prong such that the first outer post has a first side wallthat is positioned adjacent a second side wall of the outer prong andthe second outer post has a third side wall that is positioned adjacentto a fourth side wall of the outer prong that is positioned opposite thesecond side wall of the outer prong. The nose sensor of the method caninclude a first central longitudinal axis of the inner post aligned witha second central longitudinal axis of the inner prong, wherein the innerpost includes a first side wall and a second side wall, wherein thefirst outer post and the second outer post are spaced laterally awayfrom one another along the outer prong such that the first outer post ispositioned laterally outward from the first side wall of the inner postand the second outer post is positioned laterally outward from thesecond side wall of the inner post. The inner post can be configured toapply pressure to an inner portion of the nose of the patient, whereinthe first outer post is configured to apply pressure to a first outerportion of the nose of the patient that is spaced laterally outwardlyfrom the inner portion of the patient's nose, and wherein the secondouter post is configured to apply pressure to a second outer portion ofthe nose of the patient that is spaced laterally outwardly from theinner portion of the patient's nose. The inner post can be configured toapply pressure to a portion of the nose of the patient and wherein theportion of the nose of the patient is configured to be positionedbetween the first outer post and the second outer post when the innerprong and the outer prong are secured to the patient. The outer prongcan include a third outer post comprising a flexible flap coupled to theemitter. The first and second outer posts of the outer prong can becurved to conform to a portion of the nose of the patient. The innerprong can be curved to conform to a portion of the nose of the patient.The first outer post can have a first radius of curvature and a firstcurve direction, and the second outer post can have a second radius ofcurvature and a second curve direction, the first radius of curvaturebeing equal to the second radius of curvature and the first curvedirection being the same as the second curve direction. The inner prongcan be curved along a third radius of curvature and in a thirddirection, the third radius of curvature being equal to the first andsecond radius of curvatures and the third direction being the same asthe first and second curve directions. The outer prong can be U-shaped.The inner prong can include an inner base, and the outer prong caninclude an outer base. The inner prong can include an intermediateregion and the outer prong can include an intermediate region. Theintermediate region of the inner prong can be curved such that theintermediate region of the inner prong extends towards the intermediateregion of the outer prong. The nose sensor of the method can include acoupling portion configured to space the inner prong from the outerprong, wherein the coupling portion provides support to the inner andouter prongs to secure the device to the nose of the patient. The innerprong can include an inner base, and the outer prong can include anouter base. The coupling portion can include the inner base and theouter base, wherein the inner base includes a first top surface and theouter base includes a second top surface. The inner post can extend froma center of the first top surface of the inner base. The first outerpost can be spaced apart from the second outer post, and the first outerpost and the second outer post can extend from the second top surface ofthe outer base. The inner post can be wider than the first outer postand the second outer post. The nose sensor of the method can include ajoint configured to rotatably connect the inner prong and the outerprong, the joint including a first joint portion coupled to the innerprong and a second joint portion coupled to the outer prong, wherein thefirst joint portion has a first slot and the second joint portion has asecond slot, the first slot and the second slot configured to at leastpartially receive a pin. The method can include biasing the inner prongfrom the outer prong with a biasing member. The biasing member cancomprise a spring. The spring can be cylindrical or non-cylindrical. Atleast one of the outer prong or the inner prong can comprise a recessconfigured to secure at least a portion of the spring. At least one ofthe outer prong or the inner prong can comprise two protruding rimsconfigured to secure at least a portion of the spring. The twoprotruding rims can be configured to secure at least a portion of thespring by a snap-fit, press-fit, and/or a friction-fit. The spring cancomprise coils, a first leg, and a second leg. The first leg can extendin the same, or opposite, direction as the second leg. The first leg canbe parallel, non-parallel, or perpendicular to the second leg. The firstleg of the spring can extend in the same direction as the second leg.The coupling portion can comprise a joint configured to rotatablyconnect the inner prong and the outer prong, the joint including a firstjoint portion coupled to the inner prong and a second joint portioncoupled to the outer prong, wherein the first joint portion has a firstslot and the second joint portion has a second slot, the first slot andthe second slot configured to at least partially receive a pin.

BRIEF DESCRIPTION OF THE DRAWINGS

Various examples will be described hereinafter with reference to theaccompanying drawings. These examples are illustrated and described byexample only, and are not intended to limit the scope of the disclosure.In the drawings, similar elements have similar reference numerals.

FIG. 1 illustrates a block diagram depicting a computer hardware systemconfigured to run software for implementing one or more examples of thesensor system described herein.

FIG. 2 illustrates a front view of a nose sensor.

FIG. 3 illustrates a front view of the nose sensor of FIG. 2.

FIG. 4 illustrates a side view of the nose sensor of FIG. 2.

FIG. 5 illustrates a top view of the nose sensor of FIG. 2.

FIG. 6 illustrates a perspective view of the nose sensor of FIG. 2.

FIG. 7 illustrates a perspective view of the nose sensor of FIG. 2 inuse.

FIG. 8 illustrates a perspective view of the nose sensor of FIG. 2 inuse.

FIG. 9 illustrates a front view of a nose sensor.

FIG. 10 illustrates a front view of the nose sensor of FIG. 9.

FIG. 11 illustrates a perspective view of the nose sensor of FIG. 9.

FIG. 12 illustrates a top view of the nose sensor of FIG. 9.

FIG. 13 illustrates a side view of the nose sensor of FIG. 9.

FIG. 14 illustrates a perspective view of the nose sensor of FIG. 9 inuse.

FIG. 15 illustrates a perspective view of the nose sensor of FIG. 9 inuse.

FIG. 16 illustrates a perspective view of a nose sensor.

FIG. 17 illustrates a side view of the nose sensor of FIG. 16.

FIG. 18 illustrates a perspective view of the nose sensor of FIG. 16.

FIG. 19 illustrates a perspective view of the nose sensor of FIG. 16.

FIG. 20 illustrates a perspective view of the nose sensor of FIG. 16.

FIG. 21 illustrates a perspective view of the nose sensor of FIG. 16 inuse.

FIG. 22 illustrates a perspective view of the nose sensor of FIG. 16 inuse.

FIG. 23 illustrates a perspective view of a biasing member that can beincorporated into the nose sensor of FIG. 16.

FIG. 24 illustrates a top view of a biasing member that can beincorporated into the nose sensor of FIG. 16.

FIG. 25 illustrates a side view of a biasing member that can beincorporated into the nose sensor of FIG. 16.

DETAILED DESCRIPTION

The present disclosure will now be described with reference to theaccompanying figures, wherein like numerals refer to like elementsthroughout. The following description is merely illustrative in natureand is in no way intended to limit the disclosure, its application, oruses. It should be understood that steps within a method may be executedin different order without altering the principles of the presentdisclosure. Furthermore, the systems, devices, and/or methods disclosedherein can include several novel features, no single one of which issolely responsible for its desirable attributes or which is essential topracticing the systems, devices, and/or methods disclosed herein.

General

This disclosure describes noninvasive sensor systems that can enable auser to measure, view, compare, analyze, evaluate, and/or downloadinformation relating to the respiratory system, for example, via acomputing device, which may contain more advanced functionality thantraditional systems and devices. The computing device can be, forinstance, a cellphone or smartphone, tablet, laptop, personal digitalassistant (PDA), and/or the like.

Generally, the embodiments described herein can involve, be integratedwith, and/or depict several example user interfaces that may beimplemented in a user computing device. The user interfaces shown,described, and/or discussed can depict example displays generated by thenoninvasive sensor system and may be implemented in any of the userdevices described herein.

The user interfaces shown, described, and/or discussed may beimplemented in a mobile application such as an application that runs ona mobile operating system such as the Android™ operating systemavailable from Google™ or the iOS™ operating system available fromApple™. Alternatively, or in addition to being a mobile application, theuser interfaces shown, described, and/or discussed can be implemented ina web application that runs in a browser.

The user interfaces shown, described, and/or discussed are merelyexamples that illustrate some example embodiments described herein andmay be varied in other embodiments. For instance, user interfacecontrols shown may include buttons, touch-selective components and thelike which may be altered to include any type of user interface controlincluding, but not limited to, checkboxes, radio buttons, select boxes,dropdown boxes, textboxes or any combination of the same. Likewise, thedifferent user interface controls may be combined or their functionalitymay be spread apart amongst additional controls while retaining thesimilar or same functionality as shown and described herein. Althoughtouchscreen interfaces are shown, other devices may implement similaruser interfaces with other types of user input devices such as a mouse,keyboard, stylus, or the like.

FIG. 1 illustrates a block diagram of an exemplary user monitoringsystem 100. As shown in FIG. 1, the system 100 can include a usermonitor 102 comprising a processing board 104 and a host instrument 108.The processing board 104 communicates with a sensor 106 to receive oneor more intensity signal(s) indicative of one or more parameters oftissue of a user. The processing board 104 also communicates with a hostinstrument 108 to display determined values calculated using the one ormore intensity signals. The processing board 104 can include processingcircuitry arranged on one or more printed circuit boards capable ofinstallation into the monitor 102, or capable of being distributed assome or all of one or more OEM components for a wide variety of hostinstruments monitoring a wide variety of user information. Theprocessing board 104 can include a sensor interface 110, a digitalsignal processor and signal extractor (“DSP” or “processor”) 112, and aninstrument manager 114. In general, the sensor interface 110 can convertdigital control signals into analog drive signals capable of drivingsensor emitters, and converts composite analog intensity signal(s) fromlight sensitive detectors into digital data.

The sensor interface 110 can manage communication with externalcomputing devices. For example, a multipurpose sensor port (orinput/output port) can connect to the sensor 106 or alternativelyconnect to a computing device, such as a personal computer, a PDA,additional monitoring equipment or networks, or the like. When connectedto the computing device, the processing board 104 may upload variousstored data for, for example, off-line analysis and diagnosis. Thestored data may comprise trend data for any one or more of the measuredparameter data, plethysmograph waveform data acoustic sound waveform, orthe like. Moreover, the processing board 104 may advantageously downloadfrom the computing device various upgrades or executable programs, mayperform diagnosis on the hardware or software of the monitor 102. Inaddition, the processing board 104 may advantageously be used to viewand examine user data, including raw data, at or away from a monitoringsite, through data uploads/downloads, or network connections,combinations, or the like, such as for customer support purposesincluding software maintenance, customer technical support, and thelike. Upgradable sensor ports are disclosed in U.S. Pat. No. 7,500,950,filed on Jul. 23, 2004, titled “Multipurpose Sensor Port,” incorporatedby reference herein.

As shown in FIG. 1, the digital data is output to the DSP 112. The DSP112 can comprise a processing device based on the Super HarvardARChitecture (“SHARC”), such as those commercially available from AnalogDevices. However, a skilled artisan will recognize from the disclosureherein that the DSP 112 can comprise a wide variety of data and/orsignal processors capable of executing programs for determiningphysiological parameters from input data. In particular, the DSP 112includes program instructions capable of receiving multiple channels ofdata related to one or more intensity signals representative of theabsorption (from transmissive or reflective sensor systems) of aplurality of wavelengths of emitted light by body tissue. The DSP 112can accept data related to the absorption of eight (8) wavelengths oflight, although an artisan will recognize from the disclosure hereinthat the data can be related to the absorption of two (2) to sixteen(16) or more wavelengths.

FIG. 1 also shows the processing board 104 including the instrumentmanager 114. The instrument manager 114 can comprise one or moremicrocontrollers controlling system management, including, for example,communications of calculated parameter data and the like to the hostinstrument 108. The instrument manager 114 may also act as a watchdogcircuit by, for example, monitoring the activity of the DSP 112 andresetting it when appropriate.

The sensor 106 can comprise a reusable clip-type sensor, a disposableadhesive-type sensor, a combination sensor having reusable anddisposable components, or the like. Moreover, an artisan will recognizefrom the disclosure herein that the sensor 106 can also comprisemechanical structures, adhesive or other tape structures, Velcro wrapsor combination structures specialized for the type of user, type ofmonitoring, type of monitor, or the like. The sensor 106 can providedata to the board 104 and vice versa through, for example, a user cable.An artisan will also recognize from the disclosure herein that suchcommunication can be wireless, over public or private networks orcomputing systems or devices, or the like. For example, suchcommunication can be via wireless protocols such as Wi-Fi, Bluetooth,ZigBee, Z-wave, or radio frequency such as near field communication, orother wireless protocols such as cellular telephony infrared, satellitetransmission, proprietary protocols, combinations of the same, and thelike.

As shown in FIG. 1, the sensor 106 includes a plurality of emitters 116irradiating the body tissue 118 with differing wavelengths of light, andone or more detectors 120 capable of detecting the light afterattenuation by the tissue 118. The emitters 116 can include a matrix ofeight (8) emission devices mounted on a flexible substrate, the emissiondevices being capable of emitting eight (8) differing wavelengths oflight. The emitters 116 can comprise twelve (12) or sixteen (16)emitters, although other numbers of emitters are contemplated, includingtwo (2) or more, three (3) or more, four (4) or more, five (5) or more,six (6) or more, or seven (7) or more emitters, for example. As shown inFIG. 1, the sensor 106 may include other electrical components such as,for example, a memory device 122 comprising an EPROM, EEPROM, ROM, RAM,microcontroller, combinations of the same, or the like. Other sensorcomponents may include an optional temperature determination device 123or other mechanisms for, for example, determining real-time emissionwavelengths of the emitters 116.

The memory 122 may advantageously store some or all of a wide varietydata and information, including, for example, information on the type oroperation of the sensor 106; type or identification of sensor buyer ordistributor or groups of buyer or distributors, sensor manufacturerinformation, sensor characteristics including the number of emittingdevices, the number of emission wavelengths, data relating to emissioncentroids, data relating to a change in emission characteristics basedon varying temperature, history of the sensor temperature, current, orvoltage, emitter specifications, emitter drive requirements,demodulation data, calculation mode data, the parameters for which thesensor is capable of supplying sufficient measurement data (e.g., HbCO,HbMet, HbT, or the like), calibration or parameter coefficient data,software such as scripts, executable code, or the like, sensorelectronic elements, whether the sensor is a disposable, reusable,multi-site, partially reusable, partially disposable sensor, whether itis an adhesive or non-adhesive sensor, whether the sensor is areflectance, transmittance, or transreflectance sensor, whether thesensor is a finger, hand, foot, forehead, or ear sensor, whether thesensor is a stereo sensor or a two-headed sensor, sensor life dataindicating whether some or all sensor components have expired and shouldbe replaced, encryption information, keys, indexes to keys or hashfunctions, or the like, monitor or algorithm upgrade instructions ordata, some or all of parameter equations, information about the user,age, sex, medications, and other information that may be useful for theaccuracy or alarm settings and sensitivities, trend history, alarmhistory, or the like. The monitor may advantageously store data on thememory device, including, for example, measured trending data for anynumber of parameters for any number of users, or the like, sensor use orexpiration calculations, sensor history, or the like.

FIG. 1 also shows the user monitor 102 including the host instrument108. The host instrument 108 can communicate with the board 104 toreceive signals indicative of the physiological parameter informationcalculated by the DSP 112. The host instrument 108 preferably includesone or more display devices 124 capable of displaying indiciarepresentative of the calculated physiological parameters of the tissue118 at the measurement site. The host instrument 108 can advantageouslyinclude a handheld housing capable of displaying one or more of a pulserate, plethysmograph data, perfusion quality such as a perfusion qualityindex (“PI™”), signal or measurement quality (“SQ”), values of bloodconstituents in body tissue, including for example, SpO₂, HbCO, HbMet,HbT, or the like. The host instrument 108 can display values for one ormore of HbT, Hb, blood glucose, bilirubin, or the like. The hostinstrument 108 may be capable of storing or displaying historical ortrending data related to one or more of the measured values,combinations of the measured values, plethysmograph data, or the like.The host instrument 108 also includes an audio indicator 126 and userinput device 128, such as, for example, a keypad, touch screen, pointingdevice, voice recognition device, or the like.

The host instrument 108 can include audio or visual alarms that alertcaregivers that one or more physiological parameters are falling belowpredetermined safe thresholds. The host instrument 108 can includeindications of the confidence a caregiver should have in the displayeddata. The host instrument 108 can advantageously include circuitrycapable of determining the expiration or overuse of components of thesensor 106, including, for example, reusable elements, disposableelements, or combinations of the same.

Although described in terms of certain systems, other systems orcombination of systems will be apparent to those of ordinary skill inthe art from the disclosure herein. For example, the monitor 102 maycomprise one or more monitoring systems monitoring parameters, such as,for example, vital signs, blood pressure, ECG or EKG, respiration,glucose, bilirubin, or the like. Such systems may combine otherinformation with intensity-derived information to influence diagnosis ordevice operation. Moreover, the monitor 102 may advantageously includean audio system, preferably comprising a high quality audio processorand high quality speakers to provide for voiced alarms, messaging, orthe like. The monitor 102 can advantageously include an audio out jack,conventional audio jacks, headphone jacks, or the like, such that any ofthe display information disclosed herein may be audibilized for alistener. For example, the monitor 102 may include an audible transducerinput (such as a microphone, piezoelectric sensor, or the like) forcollecting one or more of heart sounds, lung sounds, trachea sounds, orother body sounds and such sounds may be reproduced through the audiosystem and output from the monitor 102. Also, wired or wirelesscommunications (such as Bluetooth® or WiFi, including IEEE 801.11a, b,or g), mobile communications, combinations of the same, or the like, maybe used to transmit the audio output to other audio transducers separatefrom the monitor 102. Other communication protocols can also beutilized. For example, such communication can be via wireless protocolssuch as ZigBee, Z-wave, or radio frequency such as near fieldcommunication, or other wireless protocols such as cellular telephonyinfrared, satellite transmission, proprietary protocols, combinations ofthe same, and the like.

Patterns or changes in the continuous noninvasive monitoring ofintensity-derived information may cause the activation of other vitalsign measurement devices, such as, for example, blood pressure cuffs.

Sensor System

This disclosure describes patient monitoring devices that can includeone or more sensors that can be worn by a patient. For example, thepatient monitoring devices discussed in this disclosure can include oneor more, two or more, three or more, four or more, or five or moresensors that can be worn by a patient. The systems described herein andshown in the attached drawings include sensors and sensor systems formeasuring physiological parameters. Sensors and physiological monitorsdescribed herein include hardware and/or software capable ofdetermining, comparing, analyzing, and/or monitoring blood oxygenationlevels in veins, arteries, a heart rate, a blood flow, respiratoryrates, and/or other physiological parameters. For example, a pulseoximetry system can use an optical sensor clipped onto a patient's nose,to measure a relative volume of oxygenated hemoglobin in pulsatilearterial blood flowing within, the fingertip, foot, ear, forehead, orother measurement sites.

The patient monitoring device discussed herein can be shaped and sizedfor use in various environmental settings and/or for use in variousapplications. For example, as described above, using the nose sensor, amedical patient can be monitored using one or more sensors, each ofwhich can transmit a signal over a cable or other communication link ormedium such as those discussed herein to a physiological monitor. A nosesensor can be placed on the alar region of the nose. As referred toherein, “nose” can include any portion of a patient's nose. For example,the patient's nose can include at least a portion of the patient'snostril, the alar region of the nose, an inner surface of the nose,and/or an outer surface of the nose, among other portions. As describedabove, the nose sensor can measure internal and/or external carotidarteries, veins, and/or other vessels to determine blood oxygenationlevels and/or changes, heart rates, blood flow measurements, respiratoryrates, and/or the like.

The nose sensor can also include sensing elements such as, for example,acoustic piezoelectric devices, electrical ECG leads, pulse oximetrysensors, and/or the like. The sensors can generate respective signals bymeasuring one or more physiological parameters of the patient. Thesensors can generate respective signals by measuring one or more, two ormore, three or more, four or more, five or more, six or more, seven ormore, eight or more, or nine or more physiological parameters of thepatient, for example. The signals can then be processed by one or moreprocessors. The one or more processors then can communicate theprocessed signal to a display if a display is provided. The display canbe incorporated in the physiological monitor. The display can beseparate from the physiological monitor. The nose sensor can have one ormore cables connecting the sensor to a monitor, other sensors, and/or adisplay, among other components. Alternatively, or additionally, thenose sensor can have a wireless transmitter, receiver, or transceiverfor receiving and/or transmitting information regarding physiologicalparameters to a display or stand-alone monitor. The wirelesstransmitter, receiver, or transceiver of the nose sensor can utilize thecommunication links or protocols discussed herein. For example, suchcommunication can be via wireless protocols such as Wi-Fi, Bluetooth,ZigBee, Z-wave, or radio frequency such as near field communication, orother wireless protocols such as cellular telephony infrared, satellitetransmission, proprietary protocols, combinations of the same, and thelike.

FIGS. 2-8 illustrate a nose sensor system 200. The nose sensor system200 can include an inner prong 202 and an outer prong 204. The innerprong 202 can be coupled to the outer prong 204 by a coupling portion220 (see FIGS. 4 and 6).

The coupling portion 220 can be formed at an intersection between theinner prong 202 and the outer prong 204. The coupling portion 220 can bepositioned approximately at a center of the outer prong 204. Forexample, the inner prong 202 and the outer prong 204 can be coupled bythe coupling portion 220. The coupling portion 220 can be generallyrounded. The coupling portion 220 can be square, rectangular, and/ortriangular. The coupling portion 220 can comprise a combination of thesestyles and/or shapes. The coupling portion 220 can help to maintain therigidity of the sensor 200. The coupling portion 220 can bias the outerprong 204 towards the inner prong 202 and/or the inner prong 202 towardsthe outer prong 204. The coupling portion 220 can space the outer prong204 from the inner prong 202 to accommodate various nose geometries.

The inner prong 202 and the outer prong 204 can be integrally formed.The inner prong 202, outer prong 204, and/or the coupling portion 220can be integrally formed. The inner prong 202 and/or the outer prong 204can be formed separately and/or can be connected by the coupling portion220. For example, the outer prong 204 can be adhered, bonded, formedwith, and/or otherwise connected to the inner prong 202. Additionally,the outer prong 204 and/or the inner prong 202 can be adhered, bonded,formed with, and/or otherwise connected to the coupling portion 220. Theouter prong 204 and/or the inner prong 202 can connect to the couplingportion 220 by a snap-fit connection. For example, the outer prong 204can snap into and thereby secure to the coupling portion 220, and/or thecoupling portion 220 can snap into and thereby secure to the outer prong204. The inner prong 202 can snap into and thereby secure to thecoupling portion 220, and/or the coupling portion 220 can snap into andthereby secure to the inner prong 202.

As shown, in FIG. 4, the inner prong 202 can extend away from the outerprong 204. The inner prong 202 can extend away from the coupling portion220 in a first and/or second direction. The inner prong 202 can includea detector 212 as described in more detail below. At least a portion ofthe inner prong 202 can be configured to be positioned within apatient's nose. At least a portion of the inner prong 202 can bepositioned adjacent an inner surface of a patient's nose. At least aportion of the inner prong 202 can engage at least a portion of an innersurface of a patient's nose. At least a portion of the inner prong 202can be positioned within a patient's nose and/or at least a portion ofthe inner prong 202 can remain outside of the patient's nose when thenose sensor 200 is in use. Alternatively, at least a portion of theinner prong 202 can be configured to be positioned outside a patient'snose. At least a portion of the inner prong 202 can be positionedadjacent an outer surface of a patient's nose. At least a portion of theinner prong 202 can engage at least a portion of an outer surface of apatient's nose.

The inner prong 202 can include at least one inner post 203. The innerpost 203 can be coupled with the detector 212 as discussed in moredetail below. The inner post 203 can be configured to be positionedwithin the patient's nose.

As shown in FIG. 2, the outer prong 204 can be generally U-shaped. Theouter prong 204 can comprise other shapes, however, such as a V-shape.The outer prong 204 can include at least one outer post 205. Forexample, the outer prong 204 can include one or more, two or more, threeor more, or four or more outer posts 205. As shown in FIG. 2, the outerprong 204 can include two outer posts 205A, 205B. The outer posts 205A,205B can be integrally formed. The outer posts 205A, 205B can be formedwith the outer prong 204. The outer posts 205A, 205B can be connecteddirectly to the coupling portion 220. The outer prong 204, the couplingportion 220, and/or the inner prong 202 can comprise various lengths.The outer prong 204 and/or the outer posts of the outer prong 204 can belonger than the inner prong 202, inner post 203, and/or the couplingportion 220. The outer prong 204 and/or the outer posts of the outerprong 204 can be shorter than the inner prong 202, inner post 203 and/orthe coupling portion 220. Thus, the outer prong 204, coupling portion220, the inner prong 202, and/or the inner post 203 can comprise variouslengths so as to aid securement to patient's having varying sizes and/orshapes of noses. The outer prong 204, the coupling portion 220, theinner prong 202, and/or the inner post 203 can also comprise variouslengths so as to aid comfort to patient's having varying sizes and/orshapes of noses when the nose sensor 200 or a portion thereof isattached to the patient.

As discussed above, the outer prong 204 can be generally U-shaped. Theouter prong 204 can be rectangular-shaped, square-shaped, and/ortriangle-shaped, among other shapes. The outer posts 205A, 205B canextend outwardly from the coupling portion 220. The outer posts 205A,205B can be curved as the outer posts 205A, 205B extend away from thecoupling portion 220. For example, a lower portion of the outer posts205A, 205B can be generally curved. An upper portion of the outer posts205A, 205B can extend generally upwardly from the lower portion. Theupper portion of the outer posts 205A, 205B can extend inwardly towardsone another and/or towards a coupling region 206 (see FIG. 4).

As shown in FIG. 4, for example, the outer prong 204 can be curved at anintermediate portion. The intermediate portion of the outer prong 204and/or of the outer posts 205A, 205B can be curved towards the innerprong 202. The intermediate portion of the outer prong 204 and/or theouter posts 205A, 205B can be generally straight such that the outerprong 204 extends generally upwardly and/or parallel to the inner prong202. The shape of the outer prong 204 can beneficially help to securethe nose sensor 200 to the patient's nose. For example, the shape of theouter prong 204 relative to the shape of the inner prong 202 can help tosecure the nose sensor 200 to the patient's nose. As shown in FIG. 4,for example, an intermediate portion of the inner prong 202 and theouter prong 204 are curved towards one another to help to secure thenose sensor 200 to the patient's nose in use. This can advantageouslyhelp to minimize contact with the patient's nose to reduce the chance ofirritating the patient's skin while also securing the nose sensor to thepatient's nose. For example, only the intermediate region of the outerprong 204 and/or the inner prong 202 can contact the patient's tissue.At least a portion of a lower, intermediate, and/or upper portion of theouter prong 204 and/or at least a portion of a lower, intermediate,and/or lower portion of the inner prong 202 can contact the patient'stissue.

As shown in at least FIGS. 4 and 5, the outer prong 204 can be biasedinwardly relative to the inner prong 202 and/or the inner prong 202 canbe biased inwardly relative to the outer prong 204. For example, theinner prong 202 and/or the outer prong 204 can be biased such that thenose sensor 200 can be secured to the patient's nose between the innerprong 202 and the outer prong 204. This can enhance comfort to thepatient when the nose sensor 200 is secured to the patient. The nosesensor 200 can be configured to accommodate various shaped and sizednoses, and in particular, the alar of the nose. For example, toaccommodate a larger nose, the outer prong 204 can be pulled away fromthe inner prong 202 and/or the inner prong 202 can be pulled away fromthe outer prong 204. In use, at least a portion of the nose sensor 200can slide onto the patient's nose. When the nose sensor 200 slides alongthe patient's nose, the outer prong 204 and/or the inner prong 202 canbend and/or be pushed outwardly by the patient's tissue. This can helpto ensure that the nose sensor 200 remains secured to the patient's noseand/or is comfortable to the patient. This can help to allow the nosesensor 200 to sit flush against the patient's tissue, inside, and/oroutside of the patient's nose. The nose sensor 200 may be less bulkyand/or occupy less space on the patient's tissue. For example, thereduced profile of the inner prong 202 can allow for a larger breathingspace within the patient's nasal passages if the inner prong 202 isconfigured to be inserted into the patient's nose when nose sensor 200is secured to the patient.

The outer prong 204, outer posts 205A and 205B, the inner post 203, thethird post 205C (see FIG. 7, 8), and/or the coupling portion 220 cancomprise a cross-section that is circular. Alternatively, the outerprong 204, outer posts 205A and 205B, the inner post 203, the third post205C, and/or the coupling portion 220 can comprise a cross-section thatis non-circular. For example, the outer prong 204, outer posts 205A and205B, the inner post 203, the third post 205C, and/or the couplingportion 220 can comprise a cross-section that is polygonal. The outerprong 204, outer posts 205A and 205B, the inner post 203, the third post205C, and/or the coupling portion 220 can comprise a cross-section thatis triangle, quadrilateral, pentagonal, hexagonal, heptagonal,octagonal, nonagonal, decagonal, or otherwise shaped. The outer prong204, outer posts 205A and 205B, the inner post 203, the third post 205C,and/or the coupling portion 220 can comprise a cross-section that issome combination of these circular and/or polygonal shapes. For example,the outer prong 204, outer posts 205A and 205B, the inner post 203, thethird post 205C, and/or the coupling portion 220 can comprise across-section that is partially circular and partially polygonal.

FIGS. 7 and 8 illustrate the nose sensor 200 in use. As shown, at leasta portion of the inner post 203 can slide into the patient's nose andengage an inner surface of the patient's nose. At least a portion of theouter posts 205A, 205B can slide along an outer region of the patient'snose and engage an outer surface of the patient's nose. Alternatively,at least a portion of the inner prong 202 and/or the inner post 203 canslide along an outer region of the patient's nose and engage an outersurface of the patient's nose, and at least a portion of the outer posts205A, 205B can slide into the patient's nose and engage an inner surfaceof the patient's nose. These configurations can help to ensure that thenose sensor 200 remains secured to the patient's nose and/or iscomfortable when secured to the patient. These configurations can helpto allow the nose sensor 200 to sit flush against the patient's tissue,inside and/or outside of the patient's nose. The sensor 200 may be lessbulky and/or occupy less space on the patient's tissue. For example, asshown in FIG. 2, a central longitudinal axis of the inner post 203 canbe aligned with or parallel to a central longitudinal axis of the innerprong 202. The first outer post 205A can be spaced from the second outerpost 205B. For example, the first outer post 205A can have a side wallthat is positioned adjacent a first side wall of the outer prong 204 andthe second outer post 205B can have a side wall that is positionedadjacent an second side wall of the outer prong 204.

As shown in the illustrated nose sensor 200 in FIG. 3, the inner post203 can include a first side wall 209A and a second side wall 209B. Thefirst outer post 205A and/or the second outer post 205B can be spacedlaterally away from one another along the outer prong 204. The firstouter post 205A can be positioned laterally outward from the first sidewall 209A of the inner post 203. The second outer post 205B can bepositioned laterally outward from the second side wall 209B of the innerpost 203.

The inner prong 202 (or a portion thereof) can apply pressure to aninner portion of the nose of the patient when the nose sensor 200 issecured to at least a portion of the patient's nose. The first outerpost 205A can apply pressure to a portion of the nose of the patientthat can be spaced laterally outwardly from at least a portion of theinner portion of the patient's nose where the inner prong 202 (orportion thereof) applies a pressure when the nose sensor 200 is securedto the patient. The second outer post 205B can apply pressure to aportion of the nose of the patient that can be spaced laterallyoutwardly from the inner portion of the patient's nose where the innerprong 202 (or portion thereof) applies a pressure when the nose sensor200 is secured to the patient. The inner post 203 can apply pressure toa portion of the nose of the patient, as discussed above. The portion ofthe nose of the patient can be positioned between the first outer post205A and/or the second outer post 205B when the inner prong 202 and theouter prong 204 of the nose sensor 200 are secured to the patient. Theinner prong 202 (or portion thereof)can apply pressure to a portion ofthe nose of the patient. The portion of the nose of the patient can bepositioned between the first outer post 205A and the second outer post205B when the inner prong 202 and the outer prong 204 are secured to thepatient.

To secure the nose sensor 200 to the patient, the inner prong 202 (orportion thereof) can apply pressure to an inner surface of the patient'snose, as discussed above. For example, the inner prong 202 (or portionthereof)can apply pressure from the inside of the patient's nose towardsthe outside of the patient's nose. The first outer post 205A and/or thesecond outer post 205B can apply pressure to the outer surface of thepatient's nose. For example, the first and/or second outer posts 205A,205B can apply pressure from the outside of the patient's nose towardsthe inside of the patient's nose. The inner prong 202 (or portionthereof)can apply pressure to a portion of the patient's nose that ispositioned at least partially between the outer posts 205A, 205B. Theouter posts 205A, 205B can apply pressure to a portion of the patient'snose that is positioned at least partially outwardly from the innerprong 202 (or portion thereof).

As discussed above, the positioning of the inner prong 202 and/or theouter prong 204 of the nose sensor 200 can advantageously help to securethe nose sensor 200 to the patient while also minimizing the contact ofportions of the nose sensor 200 with the patient. As also discussedabove, varying the positioning of portions of the nose sensor 200 and/orminimizing the contact between portions of the nose sensor 200 and thepatient can aid patient comfort and improve securement. For example, theinner prong 202 (or portions thereof), the outer prong 204, and/or thecoupling portion 220 can secure to the patient by contacting one or morepoints, areas, or portions of the patient's nose. For example, the innerprong 202 can contact an inner or outer portion of the patient's noseand the first and second outer posts 205A, 205B of the outer prong 204can contact a different inner or outer portion of the patient's nosewhen the nose sensor 200 is secured to the patient. Compared to othersensors which may contact a larger portion or region of a patient's nosewhen secured to the patient, the configuration of the inner prong 202and/or outer prong 204 of the nose sensor 200 can contact less of aportion or region of a patient's nose when the nose sensor 200 issecured to a patient. As discussed above, the inner prong 202 and/orouter prong 204 of the nose sensor 200 can be configured to contact aminimal amount of a portion or region of a patient's nose when the nosesensor 200 is secured to a patient.

The nose sensor 200 can measure various physiological parameters of apatient, as discussed above. As shown in FIGS. 2-8, for example, thenose sensor 200 can include an emitter 210 and a detector 212 to allowthe nose sensor 200 to measure the patient's physiological parameters,such as those discussed herein.

Various arrangements of the emitter 210 and/or the detector 212 canallow the nose sensor 200 to take more accurate measurements. Theemitter can be a light-emitting diode (LED). The emitter 210 can emitlight of a certain wavelength. The light emitter 210 can emit light ofdifferent wavelengths in sequence with only one emitter emitting lightat a given time, thereby forming a pulse sequence. The number ofemitters is not limiting and can range from two to eight, or more insome instances. Detailed descriptions and additional examples of thelight emitters are provided in U.S. Pat. No. 9,277,880, referencedabove.

The detector 212 can detect light from the emitter 210 after the lightpasses through and is attenuated by tissue of the patient's nose. Forexample, the detector 212 can comprise photodetectors, photodiodes,phototransistors, and/or the like. Additional details of thephotodetector are described in U.S. Pat. No. 9,277,880, referencedabove. The detector 212 can generate an electrical signal based on thedetected light from the emitter 210. The signal of the detected lightfrom the emitter 210 can be input into a signal processor describedherein, such that the signal processor can process an output of thesensor 200.

FIGS. 2-8 illustrate a detector 212. The detector 212 can be positionedalong the inner prong 202. For example, the detector 212 can be coupledwith an end of the inner post 203 of the inner prong 202. The detector212 can be coupled with an upper edge of the inner post 203. Thedetector 212 can be coupled with an inner surface of the inner post 203.The detector 212 can be adhered, bonded, formed into, and/or otherwiseattached to the inner post 203. The detector 212 can be configured toconnect to the inner post 203 by a snap-fit connection. The inner post203 and the detector 212 can be integrally formed. The detector 212 canbe secured to an inner surface of the patient's tissue within thepatient's nose.

The detector 212 can be secured to the inner surface of the patient'snose by an adhesive. Alternatively, the detector 212 can be secured tothe inner surface of the patient's nose without adhesives. For example,the engagement of the outer prong 204 and/or the inner prong 202 withthe patient's nose can hold the detector 212 against the inner surfaceof the patient's nose without the use of adhesives.

The detector 212 can be secured to the outer surface of the patient'snose by an adhesive. Alternatively, the detector 212 can be secured tothe outer surface of the patient's nose without adhesives. For example,the engagement of the outer prong 204 and/or the inner prong 202 withthe patient's nose can hold the detector 212 against the outer surfaceof the patient's nose without the use of adhesives.

The emitter 210 can be secured to the inner surface of the patient'snose by an adhesive. Alternatively, the emitter 210 can be secured tothe inner surface of the patient's nose without adhesives. For example,the engagement of the outer prong 204 and/or the inner prong 202 withthe patient's nose can hold the emitter 210 against the inner surface ofthe patient's nose without the use of adhesives.

The emitter 210 can be secured to the outer surface of the patient'snose by an adhesive. Alternatively, the emitter 210 can be secured tothe outer surface of the patient's nose without adhesives. For example,the engagement of the outer prong 204 and/or the inner prong 202 withthe patient's nose can hold the emitter 210 against the outer surface ofthe patient's nose without the use of adhesives. The emitter 210 and/orthe detector 212 can include an adhesive layer and a release linerovertop the adhesive layer. The release liner can be removed when theemitter 210 and/or the detector 212 is ready to be secured to apatient's skins surface, such as an interior or exterior portion of apatient's nose.

The securement of the nose sensor 200 to the patient can be configuredto maintain an alignment between the emitter 210 and detector 212 whenthe nose sensor 200 is in use, as discussed below. As shown in FIG. 4,the detector 212 can be angled away from the outer prong 204, the outerposts 205A, 205B, 205C and/or the emitter 210. The nose sensor 200 shapeand/or size can be varied so as to reduce the bulkiness and/or theobtrusiveness of the nose sensor 200. Thus, the nose sensor 200 canmaintain a generally low profile. The nose sensor 200 can include adiffuser positioned proximate to the emitter 210. For example, thediffuser can be positioned in front of the emitter 210. The diffuser cancomprise silicone. For example, the diffuser can include white and/orblack silicone or a combination thereof to scatter a greater amount oflight and/or more accurately measure a patient's physiologicalparameters. For example, an inner part of the diffuser can be white orof a more translucent material and the outer part can be black or of aless translucent material in order to prevent scattering of light beyondthe area of interest and to prevent stray ambient light from enteringthe tissue site. The diffuser can comprise materials other thansilicone. For example, the diffuser can comprise acrylic and/or plasticssuch as polycarbonate and/or polycarbonate film or sheets. The diffusercan comprise glass such as opal glass, ground glass, patterned glass,and/or a combination of such materials. The diffuser can also compriseother materials with varying material properties and/or characteristics.The diffuser can comprise one or more layers with different materialproperties and/or characteristics. For example, the diffuser cancomprise, two or more, three or more, four or more, five or more, six ormore, seven or more, or eight or more layers with different materialproperties and/or characteristics. Additionally, the diffuser cancomprise one or more layers with similar material properties and/orcharacteristics. For example, the diffuser can comprise, two or more,three or more, four or more, five or more, six or more, seven or more,or eight or more layers with similar material properties and/orcharacteristics.

The diffuser of the nose sensor 200 can diffuse emitted light prior toentering the tissue. The diffuser can advantageously spread out,disseminate, and/or scatter light exiting from the emitter 210 intoand/or around a portion of a patient's body, for example the nose. Thiscan permit light originating from the emitter 210 to pass through awider region or area of a patient's body, and thus better facilitatecollection of physiological parameters (such as those discussed above).The detector 212 can be sized and shaped to receive the opticalradiation after it attenuates through tissue and fluids of a portion ofa body. Diffusing light prior to entering the tissue can be advantageousbecause the light is allowed to pass through more tissue. This allowsthe light to sample more of the body tissue before being detected. Italso provides for more even and consistent light across a larger portionof tissue. The diffusion of light by the diffuser of the nose sensor 200can be performed through a light diffusion layer on or proximate to theemitter 210 structure.

The size and/or shape of the diffuser can help to avoid edge effects.For example, the thickness and/or diameter of the diffuser can help toavoid edge effects. Similarly, the proximity of the diffuser relative tothe emitter 210 can help to avoid edge effects. Such configurations canadvantageously help to desensitize the nose sensor 200 to geometricvariability. For example, the size and/or shape of the diffuser and/orthe positioning of the diffuser can allow the nose sensor 200 toaccommodate various nose shapes and/or sizes, and/or accurately measurea patient's physiological parameters when light is emitted from theemitter 210, diffused by the diffuser, transmitted through a portion ofthe patient's body, and detected by the detector 212.

As shown in at least FIGS. 2-3 and 7-8, the nose sensor 200 can includean emitter 210. The emitter 210 can be coupled to a third post 205C ofthe outer prong 204. The third post 205C can be formed with or integralwith the first post 205A,the second post 205B, and/or the outer prong204. Alternatively, the third post 205C can be separate from or notintegral with the first post 205A, the second post 205B, and/or theouter prong 204. The third post 205C can be configured to be insertedinto a portion of the outer prong 204. For example, the third post 205Ccan be inserted into an aperture (not shown) along the outer prong 204.The third post 205C can be configured to be secured to the outer prong204 or other portion of the nose sensor 200 via an adhesive, fastener,or another securement method. The third post 205C can form a flap. Theflap can be rigid or substantially rigid. Alternatively, the flap can beflexible. The flap can be flexible relative to the first and/or secondouter posts 205A, 205B, which can be substantially rigid. As shown in atleast FIGS. 7 and 8, the flap can be pulled, bent, and/or peeled awayfrom a patient's nose 207 in use. In use, the emitter 210 can be securedto an outer surface of the patient's nose 207, as described below.Alternatively, in use, the emitter 210 can be secured to an innersurface of the patient's nose 207. In some alternative configurations,the nose sensor 200 does not include a third post 205C. For example, thenose sensor 200 can have an inner prong 202 including an inner post 203and a detector 212, and an outer prong 204 with a first post 205 asecond post 205B, and a coupling portion 220. Such a configuration for anose sensor 200 can be used alongside a separate emitter which canattach to an inside or outside portion of a patient's nose to interactwith the detector 212 of nose sensor 200. Such an emitter can beelectronically coupled to the detector 212 through wiring or a flexiblecircuit.

As discussed above, the third post 205C can form a flap. The emitter 210can be coupled with the flap. For example, the emitter 210 can becoupled with an end of the flap. The emitter 210 can be positioned on aninner and/or outer surface of the flap. The flap configuration canadvantageously allow the nose sensor 200 to accommodate various nosegeometries. For example, the flap can allow the emitter 210 to bepositioned approximately parallel to the detector 212 in use. In use,the emitter 210 can be positioned such that the emitter 210 remains inalignment with the detector 212 as the nose sensor 200 is attached to apatient. Thus, the emitter can remain in alignment with the detector 212regardless of the shape and/or size of the patient's nose. In somealternative designs, the third post 205C can have a length that isdifferent than the length of the inner post 203. For example, the thirdpost 205C can have a shorter length than the length of the inner post203. Alternatively, the third post 205C can have a greater length thanthe length of the inner post 203. A nose sensor 200 having an inner post203 with a different length than the third post 205 can allow an emitter210 coupled to the third post 205C to be offset or not aligned with adetector 212 coupled to the inner post 203. Such an offset canadvantageously increase the path length between the emitter 210 and thedetector 212. For example, such an offset can advantageously allow forlight emitted from the emitter 210 to have to pass through more tissuebefore arriving and being detected by the detector 212. Even thoughmisalignment between the emitter 210 and the detector 212 may resultmore scattering of light emitted from the emitter 210 and less emittedlight getting to the detector 212, the misalignment and resultingincrease in path length can advantageously allow light to pass throughmore body tissue, which can result in more accurate measurement ofphysiological parameters.

The emitter 210 and/or the detector 212 can be spaced away from theintermediate region of the outer prong 204 and/or the inner prong 202,or other region of the inner prong 202 and/or the outer prong 204 thatcontacts the patient's tissue. This can help to space the measurementlocation, for example the space between the emitter 210 and the detector212, from the points, areas, and/or regions where the nose sensor 200 orportions thereof are secured to and/or contacting the patient. Spacingthe measurement location from these securement locations can help toreduce false and/or inaccurate readings of physiological parameters suchas those discussed herein. For example, a pressure region created bycontact between the nose sensor 200 or portions thereof and thepatient's tissue at and/or proximate to these securement locations mayalter blood flow in the patient's tissue or otherwise affect the valuesof physiological parameters measured by the nose sensor 200. Thus, byspacing the emitter 210 and/or the detector 212 from points, areas,and/or regions where the nose sensor 200 or portions thereof are securedto and/or contacting the patient, the nose sensor 200 can allow for moreaccurate measurements of physiological parameters. As discussed above,the third post 205C can be coupled with an emitter 210. The third post205C can be flexible. The third post 205C can apply little or nopressure on a patient's nose when the third post 205C and/or the emitter210 is secured to an inside or outside portion of a patient's nose. Forexample, the emitter 210 can be coupled to the third post 205C and theemitter 210 can have an adhesive surrounding the emitter 210 that helpssecure the emitter 210 and/or the third post 205C to an inside oroutside portions of a patient's nose. In such configuration, the thirdpost 205C and/or the emitter 210 can advantageously apply little or nopressure to the patient's nose, which can allow for more accuratemeasurements of physiological parameters.

An open side of the emitter 210 (for example, the side configured toface the patient's tissue) can be secured to and/or positioned againstan outside surface of the patient's nose. The emitter 210 and/or thedetector 212 can be secured to the patient's nose before, during, and/orafter securement of the outer prong 204 and/or the inner prong 202 tothe patient's nose. The outer prong 204 and/or the inner prong 202 canbe secured to the patient's nose before, during, and/or after theemitter 210 and/or the detector 212 is secured to the patient's nose.For example, the emitter 210 can be placed approximately aligned withthe detector 212 along an outer surface of the patient's nose 207.Alternatively, the emitter 210 can be placed approximately aligned withthe detector 212 along an inner surface of the patient's nose 207

The emitter 210 can include an adhesive that can be configured to couplethe emitter 210 with the patient's nose. For example, the adhesive cansecure the emitter 210 to the patient's nose at a position approximatelyaligned with the detector 212. The emitter 210 can include a liner. Theliner can cover the emitter 210 when the emitter 210 is not in use. Theliner can help to prevent the emitter 210 from inadvertently adhering toanother object. The liner can help to keep the emitter 210 clean. Theliner can help to maintain the adhesive properties of the adhesivebacking of the emitter 210 and prevent errant readings due to detectionof light before the nose sensor 200 is in place. To secure the emitter210 to the patient, the liner can be removed.

The nose sensor 200 can include a lens on and/or around the detector212. This lens can advantageously help focus light into the detector212. For example, the lens can help focus light transmitted through aportion of a patient's body, such as a nose, and originating from theemitter 210. The lens can comprise various materials. For example, thelens can comprise glass and/or plastic. The lens can also comprisevarious optical refractive properties. For example, the lens can vary inthickness, curvature, refractive index, focal length, and/or otherproperties. The lens can be a simple lens. For example, the lens cancomprise a single piece of transparent material. Alternatively, the lenscan be a compound lens. For example, the lens can comprise one or moresimple lenses arranged about a common axis. For example, the lens cancomprise two or more, three or more, four or more, five or more, or sixor more simple lenses arranged about a common axis. The lens can bepaired with a diffuser to even out light distribution before detectionand/or be surrounded by a black or dark colored border in order to blockambient stray light.

The nose sensor 200 can include wiring or a flexible circuit forelectronically coupling the emitter 210 and the detector 212. The nosesensor 200 can include wiring or a flexible circuit that couples theemitter 210 and the detector 212 and that is positioned within a portionof the nose sensor 200. For example, the nose sensor 200 can includingwiring or a flexible circuit that connects to the emitter 210 in aninterior portion of the third post 205C and that travels through aninterior portions of the outer prong 204, coupling portion 220, and/orinner post 203 to connect to the detector 212. In such configurations,the wiring or flexible circuit can be configured to fit within interiorportions of the outer prong 204, coupling portion 220, and/or inner post203 of nose sensor 200. This can advantageously simplify the attachmentand/or securement of the nose sensor 200. Alternatively, in someconfigurations, the wiring or flexible circuit can be configured to beoutside of interior portions of the nose sensor 200. For example, theemitter 210 can be electronically coupled to the detector 212 by wiringor a flexible circuit that travels outside the nose sensor 200 orcomponents of the nose sensor 200. The nose sensor 200 can have anemitter 210 and no third post 205C. For example, the nose sensor 200 canhave a detector 212 connected to a flexible circuit on one end of theflexible circuit and can have the other end of the flexible circuitconnected to the emitter 210. For example, the flexible circuit canconnect to the detector 212 at an end of the inner post 203, passthrough an interior portion of the inner post 203, inner prong 202,coupling portion 220, and/or an opening in the outer prong 204 (notshown) and connect to the emitter 210. Thus, a portion of the flexiblecircuit can be confined or secured within an interior portion of thenose sensor 200 and a portion of the flexible circuit connected to theemitter 210 can be freely moveable outside the nose sensor 200 and canbe secured to a portion of a patient's nose, such as an exteriorportion.

FIGS. 9-15 illustrate a nose sensor 300. The nose sensor 300 can besimilar to or identical to the nose sensor discussed above in some ormany respects. As shown in FIGS. 9-15, the nose sensor 300 can includean inner prong 302 and an outer prong 304, which can be respectivelysimilar to the inner prong 202 and the outer prong 204 described abovein connection with the nose sensor 200 in some or many respects. Thenose sensor 300 can include any one, or any combination, of features ofthe nose sensor 200. For example, the nose sensor 300 can include anemitter and/or a detector similar to the emitter 210 and the detector212 of the nose sensor 200.

For example, the inner prong 302 and the outer prong 304 can be coupledby a coupling portion 320. The coupling portion 320 can be generallyrounded. The coupling portion 320 can be square, rectangular, and/ortriangular. The coupling portion 320 can comprise a combination of thesestyles and/or shapes. The coupling portion 320 can help to maintain therigidity of the sensor 300. The coupling portion 320 can bias the outerprong 304 towards the inner prong 302 and/or the inner prong 302 towardsthe outer prong 304. The coupling portion 320 can bias the outer prong304 towards the inner prong 302 and/or the inner prong 302 towards theouter prong 304. The coupling portion 320 can space the outer prong 304from the inner prong 302 to accommodate various nose geometries.

The inner prong 302 and the outer prong 304 can be integrally formed.The inner prong 302, outer prong 304, and/or the coupling portion 320can be integrally formed. The inner prong 302 and/or the outer prong 304can be formed separately and/or can be connected by the coupling portion320. Additionally, the outer prong 304 and/or the inner prong 302 can beadhered, bonded, formed with, and/or otherwise connected to the couplingportion 320. The outer prong 304 and/or the inner prong 302 can connectto the coupling portion 320 by a snap-fit connection. For example, theouter prong 304 can snap into and thereby secure to the coupling portion320, and/or the coupling portion 320 can snap into and thereby secure tothe outer prong 304. The inner prong 302 can snap into and therebysecure to the coupling portion 320, and/or the coupling portion 320 cansnap into and thereby secure to the inner prong 302.

The inner prong 302 can extend away from the outer prong 304. The innerprong 302 can extend away from the coupling portion 320 in a firstand/or second direction. The inner prong 302 can include a detector asdescribed in more detail below. At least a portion of the inner prong302 can be configured to be positioned within a patient's nose. At leasta portion of the inner prong 302 can be positioned adjacent an innersurface of a patient's nose. At least a portion of the inner prong 302can engage at least a portion of an inner surface of a patient's nose.At least a portion of the inner prong 302 can be positioned within apatient's nose and/or at least a portion of the inner prong 302 canremain outside of the patient's nose when the nose sensor 300 is in use.Alternatively, at least a portion of the inner prong 302 can beconfigured to be positioned outside a patient's nose. At least a portionof the inner prong 302 can be positioned adjacent an outer surface of apatient's nose. At least a portion of the inner prong 302 can engage atleast a portion of an outer surface of a patient's nose.

As shown in FIGS. 9-15, the outer prong 304, outer posts 305A, 305B,305C, the inner prong 302 and/or the inner post 303 can be curved. Thecurvature of the outer prong 304, outer posts 305A, 305B, 305C, theinner prong 302 and/or the inner post 303 can help to conform to theshape of the patient's nose. This can help to accommodate a variety ofnasal geometries and/or can be more comfortable to the user. The outerprong 304, outer posts 305A, 305B, 305C, the inner prong 302 and/or theinner post 303 can be generally straight such that the outer prong 304and/or outer posts 305A, 305B, 305C, and inner prong 302 and/or innerpost 303 extend outwardly from the outer base 324, inner base 322,and/or the coupling portion 320. For example, as shown in FIG. 11, theouter posts 305A and 305B can be curved along a radius of curvature andin a direction similar to a curvature and direction of the inner prong302 and/or inner post 303. As can be seen by FIGS. 14 and 15, thiscurvature and direction can advantageously allow the nose sensor 303 tosecure to a patient's nose and also accommodate various shapes and/orsizes of noses of patient's while maintaining patient comfort. Thissimilar curvature and direction of curvature can also allow the emittercoupled to an outer post 305C to align or substantially align with adetector coupled to the inner post 303.

The outer prong 304 can be approximately parallel to the inner prong302. This can help to maintain an alignment between the emitter anddetector in use.

As shown, the inner prong 302 can include an inner post 303 and/or aninner base 322. The inner post 303 can be coupled with the detector asdiscussed in more detail below. Thus, the inner post 303 can beconfigured to be positioned within the patient's nose, as discussedabove. The inner base 322 can be coupled to and/or formed with thecoupling portion 320 at one side and to the inner post 303 at the otherside. The inner base 322 can be wider than the inner post 303. The innerbase 322 can be generally trapezoidal. For example, an outer surface ofthe inner base 322 can have a width that is shorter than a width of aninner surface of the base 322. The inner base 322 can be square,rectangular, circular, and/or oval-shaped. The inner base 322 can alsocomprise other polygonal shapes, such as pentagonal, hexagonal,heptagonal, octagonal, nonagonal, decagonal, or otherwise shaped.

The inner post 303 can extend from the inner base 322. For example, theinner post 303 can extend upwardly from the inner base 322. The innerpost 303 can be positioned at approximately the center of the inner base322. Alternatively, the inner post 303 can be positioned in anon-centered location of the inner base 322, for example, on a locationof the inner base 322 that is closer to an edge of the inner base 322.

As shown in at least FIGS. 11 and 15, the outer prong 304 can includeone or more outer posts 305. For example, the outer prong 304 caninclude one or more, two or more, three or more, four or more, five ormore, or six or more outer posts 305. The outer prong 304 can includeouter posts 305A, 305B, 305C and an outer base 324. The outer base 324can be coupled to and/or formed with the coupling portion 320 at oneside and/or to the outer posts 305A, 305B, and/or 305C at the otherside. The outer posts 305A, 305B can be spaced apart along the outerbase 324. For example, the outer posts 305A, 305B can be spaced apartalong a top portion of the outer base 324. The outer posts 305A, 305B,and/or 305C can extend perpendicular from a top surface of the outerbase 324. Alternatively, the outer posts 305A, 305B, and/or 305C canextend at an angle that is not perpendicular from a top surface of theouter base 324.

The outer posts 305A, 305B, and/or 305C can have the same and/or varyingwidths and/or lengths. The outer posts 305A, 305B, and/or 305C can havewidths and the inner post 303 can have a width. The width of the innerpost 303 can be wider than the respective widths of the outer posts305A, 305B, and/or 305C. This can help to secure the nose sensor 300 tothe patient's nose. The nose sensor 300 can have a reduced profileand/or incorporate reduced material, thereby reducing the overallbulkiness of the nose sensor 300. Thus, the nose sensor 300 can be morecomfortable to the patient.

As discussed above, the nose sensor 300 can include an emitter. Theemitter can be coupled to the outer post 305C of the outer prong 304.The outer post 305C can be formed or integral with the outer post 305A,the outer post 305B, and/or the outer prong 304. Alternatively, theouter post 305C can be separate from or not integral with the outer post305A, the outer post 305B, and/or the outer prong 304. The outer post305C can be configured to be inserted into a portion of the outer prong304. For example, outer post 305C can be inserted into an aperture (notshown) along the outer prong 304 and/or outer base 324. The outer post305C can be configured to be secured to the outer prong 304, outer base324, or other portion of the nose sensor 300 via an adhesive, fastener,or another securement method. As shown in at least FIGS. 14 and 15, theouter post 305C can form a flap. The flap can be rigid or substantiallyrigid. Alternatively, the flap can be flexible. The flap can be flexiblerelative to the outer posts 305A, 305B, which can be substantiallyrigid. As shown in at least FIGS. 14 and 15, the flap can be pulled,bent, and/or peeled away from a patient's nose 307 in use. In use, theemitter can be secured to an outer surface of the patient's nose 307, asdescribed below. Alternatively, in use, the emitter can be secured to aninner surface of the patient's nose 307. In some alternativeconfigurations, the nose sensor 300 does not include an outer post 305C.For example, the nose sensor 300 can have an inner prong 302 includingan inner post 303 and a detector 312, and an outer prong 304 with anouter post 305A, an outer post 305B, an outer base 324, and a couplingportion 320. Such a configuration for a nose sensor 300 can be usedalongside a separate emitter which can attach to an inside or outsideportion of a patient's nose to interact with the detector of nose sensor300. Such an emitter can be electronically coupled to the detectorthrough wiring or a flexible circuit.

As discussed above, the emitter of nose sensor 300 can be coupled withthe outer post 305C which can comprise a flap. For example, the emittercan be coupled with an end of the flap. The emitter can be positioned onan inner and/or outer surface of the flap. The flap configuration canadvantageously allow the nose sensor 300 to accommodate various nosegeometries. For example, the flap can allow the emitter to be positionedapproximately parallel to the detector in use. In use, the emitter canbe positioned such that the emitter remains in alignment with thedetector as the nose sensor 300 is attached to a patient. Thus, theemitter can remain in alignment with the detector regardless of theshape and/or size of the patient's nose. In some alternative designs,the outer post 305C can have a length that is different than the lengthof the inner post 303. For example, the outer post 305C can have ashorter length than the length of the inner post 303. Alternatively, theouter post 305C can have a greater length than the length of the innerpost 303. A nose sensor 300 having an inner post 303 with a differentlength than the outer post 305C can allow an emitter coupled to theouter post 305C to be offset or not aligned with a detector coupled tothe inner post 303. Such an offset can advantageously increase the pathlength between the emitter and the detector. For example, such an offsetcan advantageously allow for light emitted from the emitter to have topass through more tissue before arriving and being detected by thedetector. Even though misalignment between the emitter and the detectormay result more scattering of light emitted from the emitter and lessemitted light getting to the detector, the misalignment and resultingincrease in path length can advantageously allow light to pass throughmore body tissue, which can result in more accurate measurement ofphysiological parameters.

The outer prong 304 and the outer posts 305A, 305B, 305C of the outerprong 304, the coupling portion 320, and/or the inner prong 302 cancomprise various lengths. The outer prong 304 and/or the outer posts ofthe outer prong 304 can be longer than the inner prong 302 and/or thecoupling portion 320. The outer prong 304 and/or the outer posts of theouter prong 304 can be shorter than the inner prong 302 and/or thecoupling portion 320. Thus, the outer prong 304, coupling portion 320,and/or the inner prong 302 can comprise various lengths so as to aidsecurement to patient's having varying sizes and/or shapes of noses. Theouter prong 304, the coupling portion 320, and/or the inner prong 302can also comprise various lengths so as to aid comfort to patient'shaving varying sizes and/or shapes of noses when the nose sensor 300 ora portion thereof is attached to the patient.

The outer posts 305A, 305B, 305C can extend outwardly from the outerbase 324. The outer posts 305A, 305B, 305C can be curved as the outerposts 305A, 305B, 305C extend away from the outer base 324. For example,a lower portion of the outer posts 305A, 305B, 305C can be generallycurved. An upper portion of the outer posts 305A, 305B, 305C can extendgenerally upwardly from the lower portion. The upper portion of theouter posts 305A, 305B, 305C can extend inwardly towards one anotherand/or towards a coupling region 306 (see FIG. 13). The upper portion ofthe outer posts 305A, 305B, 305C can curve in the same direction, suchas is shown in FIG. 13. This curvature can advantageously help the nosesensor 300 conform more comfortably to a patient's nose or a portionthereof. The outer base 324 can be coupled to and/or formed with thecoupling portion 320 at one side and to the outer prong 304 at the otherside. The outer base 324 can be coupled to and/or formed with thecoupling portion 320 at one side and to the outer post 305A, 305B,and/or 305C at the other side. The outer base 324 can be wider than theouter post 305A, 305B, and/or 305C. The outer base 324 can be generallytrapezoidal. For example, an outer surface of the outer base 324 canhave a width that is shorter than a width of an inner surface of theouter base 324. The outer base 324 can be square, rectangular, circular,and/or oval-shaped. The outer base 324 can also comprise other polygonalshapes, such as pentagonal, hexagonal, heptagonal, octagonal, nonagonal,decagonal, or otherwise shaped.

The outer prong 304, outer posts 305A, 305B, and 305C, the inner post303, inner base 322, outer base 324, and/or the coupling portion 320 cancomprise a cross-section that is circular. Alternatively, the outerprong 304, outer posts 305A, 305B, and 305C, the inner post 303, innerbase 322, outer base 324, and/or the coupling portion 320 can comprise across-section that is non-circular. For example, the outer prong 304,outer posts 305A, 305B, and 305C, the inner post 303, inner base 322,outer base 324, and/or the coupling portion 320 can comprise across-section that is polygonal. The outer prong 304, outer posts 305A,305B, and 305C, the inner post 303, inner base 322, outer base 324,and/or the coupling portion 320 can comprise a cross-section that istriangle, quadrilateral, pentagonal, hexagonal, heptagonal, octagonal,nonagonal, decagonal, or otherwise shaped. The outer prong 304, outerposts 305A, 305B, and 305C, the inner post 303, inner base 322, outerbase 324, and/or the coupling portion 320 can comprise a cross-sectionthat is some combination of these circular and/or polygonal shapes. Forexample, the outer prong 304, outer posts 305A, 305B, and 305C, theinner post 303, inner base 322, outer base 324, and/or the couplingportion 320 can comprise a cross-section that is partially circular andpartially polygonal. As shown in at least FIGS. 11 and 15, the outerposts 305A and 305B can comprise a cross section that is square shapedand the outer posts 305A and 305B can be curved along their length tobetter accommodate various nose sizes and/or shapes. As also shown in atleast FIGS. 11 and 15, the inner post 303 can comprise a rectangularshape and can have a cross sectional width that is larger than the crosssectional width of the outer post 305A and/or the outer post 305B, whichcan aid securement of the inner post 303 to an interior portion of apatient's nose or an exterior portion of the patient's nose when thenose sensor 303 is secured to the patient. As also shown in at leastFIGS. 11 and 15, the outer base 324 can have a rectangular cross sectionand can be curved along its length, which can help to accommodatevarious nose sizes and/or shapes in the region where the outer base 324is secured or proximate to a portion of a patient's nose when the nosesensor 303 is secured to the patient. As also shown in at least FIGS. 11and 15, the coupling portion 320 can comprise a quadrilateral shapewhere a back side of the coupling portion 320 (proximate to the innerbase 322) has a width that is smaller than a front side of the couplingportion 320 (proximate to the outer base 324). This shape of thecoupling portion can advantageously maintain the spacing of the outerposts 305A and 305B along the outer base 324 while also minimizing theamount of material and/or weight of the nose sensor 303 by having rightand left sides of the coupling portion extend partially toward oneanother to culminate in the back side of the coupling portion 320 nearthe inner base 322.

Similar to the nose sensor 200, the outer prong 304 and/or the outerposts 305A, 305B, 305C of nose sensor 300 can be curved at anintermediate portion. The intermediate portion of the outer prong 304and/or of the outer posts 305A, 305B, 305C can be curved towards theinner prong 302 and/or inner port 303. The intermediate portion of theouter prong 304 and/or the outer posts 305A, 305B, 305C can be generallystraight such that the outer prong 304 extends generally upwardly and/orparallel to the inner prong 302 and/or the inner post 303. The shape ofthe outer prong 304, outer posts 305A, 305B, 305C, the inner prong 302and/or inner post 303 can beneficially help to secure the nose sensor300 to the patient's nose. For example, the shape of the outer prong 304or outer post 305A, 305B, 305C relative to the shape of the inner prong302 and/or the inner post 303 can help to secure the nose sensor 300 tothe patient's nose and can accommodate various nose sizes and/or shapes.

FIGS. 14 and 15 illustrate the nose sensor 300 when secured to the noseof a patient. As shown, at least a portion of the inner post 303 canslide into the patient's nose and engage an inner surface of thepatient's nose. At least a portion of the outer posts 305A, 305B, 305Ccan slide along an outer region of the patient's nose and engage anouter surface of the patient's nose. Alternatively, at least a portionof the inner post 303 can slide along an outer region of the patient'snose and engage an outer surface of the patient's nose, and at least aportion of the outer posts 305A, 305B, 305C can slide into the patient'snose and engage an inner surface of the patient's nose. Theseconfigurations can help to ensure that the nose sensor 300 remainssecured to the patient's nose and/or is comfortable when secured to thepatient. These configurations can help to allow the nose sensor 300 tosit flush against the patient's tissue, inside and/or outside of thepatient's nose. The sensor 300 may be less bulky and/or occupy lessspace on the patient's tissue. For example, as shown in FIG. 9, acentral longitudinal axis of the inner post 303 can be aligned with orparallel to a central longitudinal axis of the inner prong 202. As alsoshown in FIG. 9, a central longitudinal axis of the inner post 303 canbe aligned with a central longitudinal axis of the outer post 305C,which can help ensure that the emitter and the detector are aligned toaccurately measure physiological parameters when the nose sensor 300 isin us. The outer post 305A can be spaced from the outer post 305B. Forexample, the outer post 305A can have a side wall that is positionedadjacent a first side wall of the outer prong 304 and the second outerpost 305B can have a side wall that is positioned adjacent a second sidewall of the outer prong 304.

As illustrated in at least FIGS. 9-11, the inner post 303 can include afirst side wall and a second side wall. The outer post 205A and/or theouter post 205B can be spaced laterally away from one another along theouter prong 304 and/or the outer base 324. The outer post 305A can bepositioned laterally outward from the first side wall of the inner post303. The outer post 305B can be positioned laterally outward from thesecond side wall of the inner post 303.

The inner post 303 can apply pressure to an inner portion of the nose ofthe patient when the nose sensor 300 is secured to at least a portion ofthe patient's nose. The outer post 305A can apply pressure to a portionof the nose of the patient that can be spaced laterally outwardly fromat least a portion of the inner portion of the patient's nose where theinner post 303 applies a pressure when the nose sensor 300 is secured tothe patient. The outer post 305B can apply pressure to a portion of thenose of the patient that can be spaced laterally outwardly from theinner portion of the patient's nose where the inner post 303 applies apressure when the nose sensor 300 is secured to the patient. The innerpost 303 can apply pressure to a portion of the nose of the patient, asdiscussed above. The portion of the nose of the patient can bepositioned between the outer post 305A and/or the outer post 305B whenthe inner prong 302 and the outer prong 304 of the nose sensor 300 aresecured to the patient. The inner post 303 of the inner prong 302 canapply pressure to a portion of the nose of the patient. The portion ofthe nose of the patient can be positioned between the outer post 305Aand the outer post 305B when the inner prong 302 and the outer prong 304are secured to the patient.

To secure the nose sensor 300 to the patient, the inner post 303 canapply pressure to an inner surface of the patient's nose, as discussedabove. For example, the inner post 303 can apply pressure from theinside of the patient's nose towards the outside of the patient's nose.The outer post 305A and/or the outer post 305B can apply pressure to theouter surface of the patient's nose. For example, the outer post 205Aand/or the outer post 205B can apply pressure from the outside of thepatient's nose towards the inside of the patient's nose. The inner post303 can apply pressure to a portion of the patient's nose that ispositioned at least partially between the outer posts 305A, 305B. Theouter posts 305A, 305B can apply pressure to a portion of the patient'snose that is positioned at least partially outwardly from the inner post303.

As discussed above, the positioning of the inner prong 302 and/or theouter prong 304 of the nose sensor 300 can advantageously help to securethe nose sensor 300 to the patient while also minimizing the contact ofportions of the nose sensor 300 with the patient. As also discussedabove, varying the positioning of portions of the nose sensor 300 and/orminimizing the contact between portions of the nose sensor 300 and thepatient can aid patient comfort and improve securement. For example, theinner prong 302 (or portions thereof), the outer prong 304 (or portionsthereof), the coupling portion 220 (or portions thereof) can secure tothe patient by contacting one or more points, areas, or portions of thepatient's nose. For example, the inner prong 302 can contact an inner orouter portion of the patient's nose and the outer posts 305A, 305B ofthe outer prong 304 can contact a different inner or outer portion ofthe patient's nose when the nose sensor 300 is secured to the patient.Compared to other sensors which may contact a larger portion or regionof a patient's nose when secured to the patient, the configuration ofthe inner prong 302 and/or outer prong 304 of the nose sensor 300 cancontact less of a portion or region of a patient's nose when the nosesensor 300 is secured to a patient. As discussed above, the inner prong302 and/or outer prong 304 of the nose sensor 300 can be configured tocontact a minimal amount of a portion or region of a patient's nose whenthe nose sensor 300 is secured to a patient.

The nose sensor 300 can measure various physiological parameters of apatient, like those discussed above. As discussed above, the nose sensor300 can include an emitter and a detector to allow the nose sensor 300to measure the patient's physiological parameters, such as thosediscussed herein.

Various arrangements of the emitter and/or the detector can allow thenose sensor 300 to take more accurate measurements. The emitter can be alight-emitting diode (LED). The emitter can emit light of a certainwavelength. The light emitter can emit light of different wavelengths insequence with only one emitter emitting light at a given time, therebyforming a pulse sequence. The number of emitters is not limiting and canrange from two to eight, or more in some instances. Detaileddescriptions and additional examples of the light emitters are providedin U.S. Pat. No. 9,277,880, referenced above.

The detector can detect light from the emitter after the light passesthrough and is attenuated by tissue of the patient's nose. For example,the detector can comprise photodetectors, photodiodes, phototransistors,and/or the like. Additional details of the photodetector are describedin U.S. Pat. No. 9,277,880, referenced above. The detector can generatean electrical signal based on the detected light from the emitter. Thesignal of the detected light from the emitter can be input into a signalprocessor described herein, such that the signal processor can processan output of the sensor 300.

The detector can be positioned along the inner prong 302. For example,the detector can be coupled with an end of the inner post 303 of theinner prong 302. The detector can be coupled with an upper edge of theinner post 303. The detector can be coupled with an inner surface of theinner post 303. The detector can be adhered, bonded, formed into, and/orotherwise attached to the inner post 303. The detector can be configuredto connect to the inner post 303 by a snap-fit connection. The innerpost 303 and the detector can be integrally formed. The detector can besecured to an inner surface of the patient's tissue within the patient'snose. The detector and/or the emitter can advantageously assist indesensitizing the nose sensor 300 to various geometric variations.

The detector can be secured to the inner surface of the patient's noseby an adhesive. Alternatively, the detector can be secured to the innersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 304 and/or the inner prong 302 with thepatient's nose can hold the detector against the inner surface of thepatient's nose without the use of adhesives.

The detector can be secured to the outer surface of the patient's noseby an adhesive. Alternatively, the detector can be secured to the outersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 304 and/or the inner prong 302 with thepatient's nose can hold the detector against the outer surface of thepatient's nose without the use of adhesives.

The emitter can be secured to the inner surface of the patient's nose byan adhesive. Alternatively, the emitter can be secured to the innersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 304 and/or the inner prong 202 with thepatient's nose can hold the emitter against the inner surface of thepatient's nose without the use of adhesives.

The emitter can be secured to the outer surface of the patient's nose byan adhesive. Alternatively, the emitter can be secured to the outersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 304 and/or the inner prong 302 with thepatient's nose can hold the emitter against the outer surface of thepatient's nose without the use of adhesives. The emitter and/or thedetector can include an adhesive layer and a release liner overtop theadhesive layer. The release liner can be removed when the emitter and/orthe detector is ready to be secured to a patient's skins surface, suchas an interior or exterior portion of a patient's nose.

The securement of the nose sensor 300 to the patient can be configuredto maintain an alignment between the emitter and detector when the nosesensor 300 is in use, as discussed below. The detector can be angledaway from the outer prong 304, the outer posts 305A, 305B, 305C and/orthe emitter. The nose sensor 300 shape and/or size can be varied so asto reduce the bulkiness and/or the obtrusiveness of the nose sensor 300.Thus, the nose sensor 300 can maintain a generally low profile. The nosesensor 300 can include a diffuser positioned proximate to the emitter.For example, the diffuser can be positioned in front of the emitter. Thediffuser can comprise silicone. For example, the diffuser can includewhite and/or black silicone to scatter a greater amount of light and/ormore accurately measure a patient's physiological parameters. Thediffuser can comprise materials other than silicone. For example, thediffuser can comprise acrylic and/or plastics such as polycarbonateand/or polycarbonate film or sheets. The diffuser can comprise glasssuch as opal glass, ground glass, patterned glass, and/or a combinationof such materials. The diffuser can also comprise other materials withvarying material properties and/or characteristics. The diffuser cancomprise one or more layers with different material properties and/orcharacteristics. For example, the diffuser can comprise, two or more,three or more, four or more, five or more, six or more, seven or more,or eight or more layers with different material properties and/orcharacteristics. Additionally, the diffuser can comprise one or morelayers with similar material properties and/or characteristics. Forexample, the diffuser can comprise, two or more, three or more, four ormore, five or more, six or more, seven or more, or eight or more layerswith similar material properties and/or characteristics.

The diffuser of the nose sensor 300 can diffuse emitted light prior toentering the tissue. The diffuser can advantageously spread out,disseminate, and/or scatter light exiting from the emitter into and/oraround a portion of a patient's body, for example the nose. This canpermit light originating from the emitter to pass through a wider regionor area of a patient's body, and thus better facilitate collection ofphysiological parameters (such as those discussed above). The detectorcan be sized and shaped to receive the optical radiation after itattenuates through tissue and fluids of a portion of a body. Diffusinglight prior to entering the tissue can be advantageous because the lightis allowed to pass through more tissue. This allows the light to samplemore of the body tissue before being detected. It also provides for moreeven and consistent light across a larger portion of tissue. Thediffusion of light by the diffuser of the nose sensor 300 can beperformed through a light diffusion layer on or proximate to the emitterstructure.

The size and/or shape of the diffuser can help to avoid edge effects.For example, the thickness and/or diameter of the diffuser can help toavoid edge effects. Similarly, the proximity of the diffuser relative tothe emitter can help to avoid edge effects. Such configurations canadvantageously help to desensitize the nose sensor 300 to geometricvariability. For example, the size and/or shape of the diffuser and/orthe positioning of the diffuser can allow the nose sensor 300 toaccommodate various nose shapes and/or sizes, and/or accurately measurea patient's physiological parameters when light is emitted from theemitter, diffused by the diffuser, transmitted through a portion of thepatient's body, and detected by the detector.

The emitter and/or the detector can be spaced away from the intermediateregion of the outer prong 304 and/or the inner prong 302, or otherregion of the inner prong 302 and/or the outer prong 304 that contactsthe patient's tissue when the nose sensor 300 is secured to the patient.The emitter and/or the detector can be spaced away from the outer post305A, 305B, 305C, the inner prong 302 and/or the inner post 303 thatcontacts the patient's tissue when the nose sensor 300 is secured to thepatient. This can help to space the measurement location, for examplethe space between the emitter and the detector, from the points, areas,and/or regions where the nose sensor 300 or portions thereof are securedto and/or contacting the patient. Spacing the measurement location fromthese securement locations can help to reduce false and/or inaccuratereadings of physiological parameters such as those discussed herein. Forexample, a pressure region created by contact between the nose sensor300 or portions thereof and the patient's tissue at and/or proximate tothese securement locations may alter blood flow in the patient's tissueor otherwise affect the values of physiological parameters measured bythe nose sensor 300. Thus, by spacing the emitter and/or the detectorfrom points, areas, and/or regions where the nose sensor 300 or portionsthereof are secured to and/or contacting the patient, the nose sensor300 can allow for more accurate measurements of physiologicalparameters. As discussed above, the outer post 305C can be coupled withan emitter. The outer post 305C can be flexible. The outer post 305C canapply little or no pressure on a patient's nose when the outer post 305Cand/or the emitter is secured to an inside or outside portion of apatient's nose. For example, the emitter can be coupled to the outerpost 305C and the emitter can have an adhesive which surrounds theemitter and secures the emitter and/or the outer post 305C to an insideor outside portion of a patient's nose. In such configuration, the outerpost 305C and/or the emitter can advantageously apply little or nopressure to the patient's nose, which can allow for more accuratemeasurements of physiological parameters.

An open side of the emitter (for example, the side configured to facethe patient's tissue) can be secured to and/or positioned against anoutside surface of the patient's nose. The emitter and/or the detectorcan be secured to the patient's nose before, during, and/or aftersecurement of the outer prong 304 and/or the inner prong 302 to thepatient's nose. The outer prong 304 and/or the inner prong 302 can besecured to the patient's nose before the emitter and/or the detector issecured to the patient's nose. For example, the emitter can be placedapproximately aligned with the detector along an outer surface of thepatient's nose 307. Alternatively, the emitter can be placedapproximately aligned with the detector along an inner surface of thepatient's nose 307

The emitter can include an adhesive that can be configured to couple theemitter with the patient's nose. For example, the adhesive can securethe emitter to the patient's nose at a position approximately alignedwith the detector. The emitter can include a liner. The liner can coverthe emitter when the emitter is not in use. The liner can help toprevent the emitter from inadvertently adhering to another object. Theliner can help to keep the emitter clean. The liner can help to maintainthe adhesive properties of the adhesive backing of the emitter andprevent errant readings due to detection of light before the nose sensor300 is in place. To secure the emitter to the patient, the liner can beremoved.

The nose sensor 300 can include a lens on and/or around the detector.This lens can advantageously help focus light into the detector. Forexample, the lens can help focus light transmitted through a portion ofa patient's body, such as a nose, and originating from the emitter. Thelens can comprise various materials. For example, the lens can compriseglass and/or plastic. The lens can also comprise various opticalrefractive properties. For example, the lens can vary in thickness,curvature, refractive index, focal length, and/or other properties. Thelens can be a simple lens. For example, the lens can comprise a singlepiece of transparent material. Alternatively, the lens can be a compoundlens. For example, the lens can comprise one or more simple lensesarranged about a common axis. For example, the lens can comprise two ormore, three or more, four or more, five or more, or six or more simplelenses arranged about a common axis. The lens can be paired with adiffuser to even out light distribution before detection and/or besurrounded by a black or dark colored border in order to block ambientstray light.

The nose sensor 300 can include wiring or a flexible circuit forelectronically coupling the emitter and the detector. The nose sensor300 can include wiring or a flexible circuit that couples the emitterand the detector and that is positioned within a portion of the nosesensor 300. For example, the nose sensor can including wiring or aflexible circuit that connects to the emitter in an interior portion ofthe outer post 305C and that travels through an interior portions of theouter prong 304, outer base 324, coupling portion 320, and/or inner post303 to connect to the detector. In such configurations, the wiring orflexible circuit can be configured to fit within interior portions ofthe outer prong 304, coupling portion3, and/or inner post 303 of nosesensor 300. This can advantageously simplify the attachment and/orsecurement of the nose sensor 300. Alternatively, in someconfigurations, the wiring or flexible circuit can be configured to beoutside of interior portions of the nose sensor 300. For example, theemitter can be electronically coupled to the detector by wiring or aflexible circuit that travels outside the nose sensor 300 or componentsof the nose sensor 300. The nose sensor 300 can have an emitter and noouter post 305C. For example, the nose sensor 300 can have a detectorconnected to a flexible circuit on one end of the flexible circuit andcan have the other end of the flexible circuit connected to the emitter.For example, the flexible circuit can connect to the detector at an endof the inner post 303, pass through an interior portion of the innerpost 303, inner prong 302, inner base 322, coupling portion 320, outerbase 324, and/or an opening in the outer base 324 (not shown) and/orouter prong 304 and connect to the emitter. Thus, a portion of theflexible circuit can be confined or secured within an interior portionof the nose sensor 300 and a portion of the flexible circuit connectedto the emitter can be freely moveable outside the nose sensor 300 andcan be secured to a portion of a patient's nose, such as an exteriorportion.

FIGS. 16-22 illustrate a nose sensor 400. The nose sensor 400 is similarto or identical to the nose sensor discussed above in many respects. Asshown in FIGS. 16-22, the nose sensor 400 can include an inner prong 402and an outer prong 404, which can be respectively similar to the innerprong 202, 302 and the outer prong 204, 304 described above inconnection with the nose sensor 200, 300. The nose sensor 400 caninclude any one, or any combination, of features of the nose sensor 200,300.

The nose sensor 400 can include a clip-type arrangement. For example,the inner prong 402 and the outer prong 404 can be coupled by a couplingportion 420. The coupling portion 420 can form a joint 421. For example,the joint 421 can include a pivot pin 430. The inner prong 402 caninclude at least one pivot hole 432 and/or the outer prong 404 caninclude at least one pivot hole 434. The pivot pin 430 can be configuredto pass through the pivot holes 432, 434 to pivotally connect the outerprong 404 with the inner prong 402.

The joint 421 can include one or more, two or more, three or more, fouror more, or five or more joint portions. As shown in FIG. 16, the joint421 can include an inner joint portion 421A and an outer joint portion421B. The inner joint portion 421A can be coupled to and/or formed withthe inner prong 402. The outer joint portion 421B can be coupled toand/or formed with the outer prong 404. As shown, the joint 421 caninclude at least two outer joint portions 421B and at least two innerjoint portions 421A. The outer joint portions 421B can extend inwardlyfrom the outer prong 404 and/or towards the inner prong 402 whenassembled. The inner joint portions 421A can extend inwardly from theinner prong 402 and/or towards the outer prong 404 when assembled.

The outer joint portions 421B can be formed along opposite outer edgesof the outer prong 404. This can allow the inner joint portions 421A tobe positioned between the outer joint portions 421B. The inner jointportions 421A can form a single protrusion. The inner joint portions421A can include two or more protrusions. As shown, the pivot pin 430can extend through the outer joint portions 421B and the inner jointportions 421A when assembled.

The joint 421 can allow the outer prong 404 and/or the inner prong 402to pivot with respect to one another. This can advantageouslyaccommodate various shaped nasal geometries. This can alsoadvantageously help a caregiver or other person to position and securethe nose sensor 400 to the nose of a patient.

As shown in FIGS. 16-22, the inner prong 402 can include an inner base422 and an inner post 403. The inner post 403 can be formed or integralwith inner base 422. The inner base 422 can have substantially flatinner and/or outer surfaces. At least one end of the inner base 422 canbe rounded and/or squared. As shown in FIG. 16, one end of the innerbase 422 can be rounded and an opposite end can be substantially flat.As also shown in FIGS. 16-22, the outer prong 404 can include an outerbase 424 and an outer posts 405A and 405B. The outer base 424 can havesubstantially flat inner and/or outer surfaces. At least one end of theouter base 424 can be rounded and/or squared. As shown in FIG. 16, oneend of the outer base 424 can be rounded and an opposite end can besubstantially flat.

The inner post 403 can extend from the inner base 422. For example, theinner post 403 can be positioned on one side of the joint 421. A portionof the inner prong 402 can be inserted into a patient's nose. Forexample, the inner post 403 can be inserted into a patient's nose to besecured to the inner surface of the patient's nose while the inner base422 of the inner prong 402 can lie outside or substantially outside apatient's nose. Alternatively, a portion of the inner prong 402 can besecured to an outside portion of a patient's nose when the nose sensor400 is in use.

The outer prong 404 can be approximately parallel to the inner prong402. This can help to maintain an alignment between the emitter and/orthe detector in use, as described above.

The inner post 403 can be positioned approximately at a center region ofan end or surface of the inner base 422. As shown in FIGS. 16-22, atleast a portion of the outer prong 404 and/or the inner prong 402 can becurved. For example, at least the inner post 403 and the outer posts405A, 405B can be curved. The curvature of the inner post 403 and/or theouter posts 405A, 405B can help to conform to the shape of the patient'snose, as discussed with respect to the nose sensor 200, 300 previously.This can help to accommodate a variety of nasal geometries and/or can bemore comfortable to the user. The outer prong 404 and/or the inner prong402 can be generally straight such that the outer and inner prongs 404,402 extend outwardly from the coupling portion 420.

The inner post 403, the inner base 422, and or the joint portion 421Acan be integrally formed. Alternatively, the inner post 403, the innerbase 422, and or the joint portion 421A can be not integrally formed,but rather, can be secured or connected to one another prior to assemblyof the nose sensor 400. For example, the inner post 403, the inner base422, and or the joint portion 421A can be adhered or bonded to oneanother.

The outer posts 405A, 405B, and/or 405C, the outer base 424, and/or thejoint portion 421B can be integrally formed. Alternatively, the outerposts 405A, 405B, and/or 405C, the outer base 424, and/or the jointportion 421B can be not integrally formed, but rather, can be secured orconnected to one another prior to assembly of the nose sensor 400. Forexample, the outer posts 405A, 405B, and/or 405C, the outer base 424,and/or the joint portion 421B can be adhered or bonded to one another.

The inner prong 402 and the outer prong 404 can be secured to oneanother by a snap-fit connection. For example, instead of utilizing thejoint 421 and pin 430, the inner prong 402 and the outer prong 404 couldinclude a snap-fit connection whereby the inner prong 402 and the outerprong 404 snap into place to secure to one another. This snap-fitconnection could also be configured to allow rotation, such as rotationsimilar to the rotation permitted in the joint 421 configuration.

The inner post 403 can extend away from the coupling portion 420 in afirst and/or second direction. The inner prong 302 can include adetector coupled to the inner post 303 as described in more detailbelow. At least a portion of the inner prong 402 can be configured to bepositioned within a patient's nose. At least a portion of the innerprong 402 can be positioned adjacent an inner surface of a patient'snose. At least a portion of the inner prong 402 can engage at least aportion of an inner surface of a patient's nose. At least a portion ofthe inner prong 402 can be positioned within a patient's nose and/or atleast a portion of the inner prong 402 can remain outside of thepatient's nose when the nose sensor 400 is in use. Alternatively, atleast a portion of the inner prong 402 can be configured to bepositioned outside a patient's nose. At least a portion of the innerprong 402 can be positioned adjacent an outer surface of a patient'snose. At least a portion of the inner prong 402 can engage at least aportion of an outer surface of a patient's nose.

The inner prong 402 can include at least one inner post 403. The innerpost 403 can be coupled with the detector as discussed in more detailbelow. Thus, the inner post 403 can be configured to be positionedwithin the patient's nose, as discussed above. Alternatively, the innerpost 403 can be configured to be positioned along an exterior portion ofa patient's nose.

The outer prong 404 and/or the inner prong 402 can comprise variouslengths. The outer posts 405A, 405B, and/or 405C of the outer prong 404can be longer than the inner post 403 of the inner prong 202. The outerposts 405A, 405B, and/or 405C of the outer prong 404 can be shorter thanthe inner post 403 of the inner prong 202. Thus, the outer posts 405A,405B, and/or 405C of the outer prong 404 and the inner post 403 of theinner prong 202 can comprise various lengths so as to aid securement topatient's having varying sizes and/or shapes of noses. The outer posts405A, 405B, and/or 405C of the outer prong 404 and the inner post 403 ofthe inner prong 402 can comprise various lengths so as to aid comfort topatient's having varying sizes and/or shapes of noses when the nosesensor 400 or a portion thereof is attached to the patient.

The outer posts 405A, 405B, 405C, the inner post 403, and/or the innerpost 405C, can comprise a cross-section that is circular. Alternatively,the outer posts 405A, 405B, 405C, the inner post 403, and/or the innerpost 405C can comprise a cross-section that is non-circular. Forexample, the outer posts 405A, 405B, 405C, the inner post 403, and/orthe inner post 405C can comprise a cross-section that is polygonal. Theouter posts 405A, 405B, 405C, the inner post 403, and/or the inner post405C can comprise a cross-section that is triangle, quadrilateral,pentagonal, hexagonal, heptagonal, octagonal, nonagonal, decagonal, orotherwise shaped. The outer posts 405A, 405B, 405C, the inner post 403,and/or the inner post 405C can comprise a cross-section that is somecombination of these circular and/or polygonal shapes. For example, theouter posts 405A, 405B, 405C, the inner post 403, and/or the inner post405C can comprise a cross-section that is partially circular andpartially polygonal.

As shown in FIG. 16, for example, the outer posts 405A, 405B, and/or405C can be curved towards the inner prong 402 and/or inner post 403.Alternatively, the outer posts 405A, 405B, and/or 405C can be generallystraight such that the outer posts 405A, 405B, and/or 405C extendgenerally upwardly from the coupling portion 420 and/or the outer base424. The shape of the outer prong 204 and/or outer posts 405A, 405B,405C can beneficially help to secure the nose sensor 400 to thepatient's nose. For example, the shape of the outer prong 204 relativeto the shape of the inner prong 202 can help to secure the nose sensor200 to the patient's nose. As shown in FIG. 16, for example, anintermediate portion of the inner post 403 of the inner prong 202 and anintermediate portion of the outer posts 405A, 405B of the outer prong204 are curved in a similar direction and at a similar radius ofcurvature to one another to help to secure the nose sensor 400 to thepatient's nose in use.

FIGS. 21 and 22 illustrate the nose sensor 400 when secured to apatient's nose. As shown, at least a portion of the inner post 403 canslide into the patient's nose and engage an inner surface of thepatient's nose. At least a portion of the outer posts 405A, 405B, 405Ccan slide along an outer region of the patient's nose and engage anouter surface of the patient's nose. Alternatively, at least a portionof the inner post 403 can slide along an outer region of the patient'snose and engage an outer surface of the patient's nose, and at least aportion of the outer posts 405A, 405B, 405C can slide into the patient'snose and engage an inner surface of the patient's nose. Theseconfigurations can help to ensure that the nose sensor 400 remainssecured to the patient's nose and/or is comfortable when secured to thepatient. These configurations can help to allow the nose sensor 400 tosit flush against the patient's tissue, inside and/or outside of thepatient's nose. The sensor 400 may be less bulky and/or occupy lessspace on the patient's tissue.

As shown in at least FIG. 18, a central longitudinal axis of the innerpost 403 can be aligned with or parallel to a central longitudinal axisof the inner prong 402. As also shown in FIG. 18, a central longitudinalaxis of the inner post 403 can be aligned with a central longitudinalaxis of the outer post 405C, which can help ensure that the emitter andthe detector are aligned to accurately measure physiological parameterswhen the nose sensor 400 is in use. The outer post 405A can be spacedfrom the outer post 405B.

As shown, the outer prong 404 can include outer posts 405A, 405B and anouter base 424. The outer base 424 can be coupled to and/or formed withthe coupling portion 420 at one side and to the outer posts 405A, 405Bat another side. The outer posts 405A, 405B can be spaced apart along aportion of the outer base 424. For example, the outer posts 405A, 405Bcan be spaced apart along a top portion of the outer base 424. As shown,the inner post 403 can be positioned between the outer posts 405A, 405Bin a top view of the nose sensor 400 (for example, as shown in FIG. 18).

As illustrated in at least FIGS. 16 and 18, the inner post 403 caninclude a first side wall and a second side wall. The outer post 405Aand/or the outer post 405B can be spaced laterally away from one anotheralong the outer prong 404 and/or the outer base 424. The outer post 405Acan be positioned laterally outward from the first side wall of theinner post 403. The outer post 405B can be positioned laterally outwardfrom the second side wall of the inner post 403.

The inner post 403 can apply pressure to an inner portion of the nose ofthe patient when the nose sensor 400 is secured to at least a portion ofthe patient's nose. The outer post 405A can apply pressure to a portionof the nose of the patient that can be spaced laterally outwardly fromat least a portion of the inner portion of the patient's nose where theinner post 403 applies a pressure when the nose sensor 400 is secured tothe patient. The outer post 405B can apply pressure to a portion of thenose of the patient that can be spaced laterally outwardly from theinner portion of the patient's nose where the inner post 403 applies apressure when the nose sensor 400 is secured to the patient. The innerpost 403 can apply pressure to a portion of the nose of the patient, asdiscussed above. The portion of the nose of the patient can bepositioned between the outer post 405A and/or the outer post 405B whenthe inner prong 402 and the outer prong 404 of the nose sensor 400 aresecured to the patient. The inner post 403 of the inner prong 402 canapply pressure to a portion of the nose of the patient. The portion ofthe nose of the patient can be positioned between the outer post 405Aand the outer post 405B when the inner prong 402 and the outer prong 404are secured to the patient.

To secure the nose sensor 400 to the patient, the inner post 403 canapply pressure to an inner surface of the patient's nose, as discussedabove. For example, the inner post 403 can apply pressure from theinside of the patient's nose towards the outside of the patient's nose.The outer post 405A and/or the second outer post 405B can apply pressureto the outer surface of the patient's nose. For example, the outer post205A and/or the outer post 405B can apply pressure from the outside ofthe patient's nose towards the inside of the patient's nose. The innerpost 403 can apply pressure to a portion of the patient's nose that ispositioned at least partially between the outer posts 405A, 405B. Theouter posts 405A, 405B can apply pressure to a portion of the patient'snose that is positioned at least partially outwardly from the inner post403.

As discussed above, the positioning of the inner prong 402 and/or theouter prong 404 of the nose sensor 400 can advantageously help to securethe nose sensor 400 to the patient while also minimizing the contact ofportions of the nose sensor 400 with the patient. As also discussedabove, varying the positioning of portions of the nose sensor 400 and/orminimizing the contact between portions of the nose sensor 400 and thepatient can aid patient comfort and improve securement. For example, theinner prong 402 (or portions thereof), the outer prong 404 (or portionsthereof), and/or the coupling portion 420 can secure to the patient bycontacting one or more points, areas, or portions of the patient's nose.For example, the inner prong 402 can contact an inner or outer portionof the patient's nose and the outer posts 405A, 405B of the outer prong404 can contact a different inner or outer portion of the patient's nosewhen the nose sensor 400 is secured to the patient. Compared to othersensors which may contact a larger portion or region of a patient's nosewhen secured to the patient, the configuration of the inner prong 402and/or outer prong 404 of the nose sensor 400 can contact less of aportion or region of a patient's nose when the nose sensor 400 issecured to a patient. As discussed above, the inner prong 402 and/orouter prong 404 of the nose sensor 400 can be configured to contact aminimal amount of a portion or region of a patient's nose when the nosesensor 400 is secured to a patient.

The nose sensor 400 can measure various physiological parameters of apatient, as discussed above. Similar to nose sensor 200 and/or 300, thenose sensor 400 can include an emitter and a detector to allow the nosesensor 400 to measure the patient's physiological parameters, such asthose discussed herein.

Various arrangements of the emitter and/or the detector can allow thenose sensor 400 to take more accurate measurements. The emitter can be alight-emitting diode (LED). The emitter can emit light of a certainwavelength. The light emitter can emit light of different wavelengths insequence with only one emitter emitting light at a given time, therebyforming a pulse sequence. The number of emitters is not limiting and canrange from two to eight, or more in some instances. Detaileddescriptions and additional examples of the light emitters are providedin U.S. Pat. No. 9,277,880, referenced above.

The detector can detect light from the emitter after the light passesthrough and is attenuated by tissue of the patient's nose. For example,the detector can comprise photodetectors, photodiodes, phototransistors,and/or the like. Additional details of the photodetector are describedin U.S. Pat. No. 9,277,880, referenced above. The detector can generatean electrical signal based on the detected light from the emitter. Thesignal of the detected light from the emitter can be input into a signalprocessor described herein, such that the signal processor can processan output of the sensor 400.

The detector of nose sensor 400 can be positioned along the inner prong402. For example, the detector can be coupled with an end of the innerpost 403 of the inner prong 202, similar to nose sensor 200 and/or 300.The detector can be coupled with an upper edge of the inner post 403.The detector can be coupled with an inner surface of the inner post 403.The detector can be adhered, bonded, formed into, and/or otherwiseattached to the inner post 403. The detector can be configured toconnect to the inner post 403 by a snap-fit connection. The inner post403 and the detector can be integrally formed. The detector can besecured to an inner surface of the patient's tissue within the patient'snose. The detector and/or the emitter can advantageously assist indesensitizing the nose sensor 400 to various geometric variations.

The detector can be secured to the inner surface of the patient's noseby an adhesive. Alternatively, the detector can be secured to the innersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 404 and/or the inner prong 402 with thepatient's nose can hold the detector against the inner surface of thepatient's nose without the use of adhesives.

The detector can be secured to the outer surface of the patient's noseby an adhesive. Alternatively, the detector can be secured to the outersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 404 and/or the inner prong 402 with thepatient's nose can hold the detector against the outer surface of thepatient's nose without the use of adhesives.

The emitter can be secured to the inner surface of the patient's nose byan adhesive. Alternatively, the emitter can be secured to the innersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 404 and/or the inner prong 402 with thepatient's nose can hold the emitter against the inner surface of thepatient's nose without the use of adhesives.

The emitter can be secured to the outer surface of the patient's nose byan adhesive. Alternatively, the emitter can be secured to the outersurface of the patient's nose without adhesives. For example, theengagement of the outer prong 404 and/or the inner prong 402 with thepatient's nose can hold the emitter against the outer surface of thepatient's nose without the use of adhesives. The emitter and/or thedetector can include an adhesive layer and a release liner overtop theadhesive layer. The release liner can be removed when the emitter and/orthe detector is ready to be secured to a patient's skins surface, suchas an interior or exterior portion of a patient's nose.

The securement of the nose sensor 400 to the patient can be configuredto maintain an alignment between the emitter and detector when the nosesensor 400 is in use, as discussed below. The detector can be angledaway from the outer prong 404, the outer posts 405A, 405B, 405C and/orthe emitter. The nose sensor 400 shape and/or size can be varied so asto reduce the bulkiness and/or the obtrusiveness of the nose sensor 400.Thus, the nose sensor 400 can maintain a generally low profile. The nosesensor 400 can include a diffuser positioned proximate to the emitter.For example, the diffuser can be positioned in front of the emitter. Thediffuser can comprise silicone. For example, the diffuser can includewhite and/or black silicone to scatter a greater amount of light and/ormore accurately measure a patient's physiological parameters. Thediffuser can comprise materials other than silicone. For example, thediffuser can comprise acrylic and/or plastics such as polycarbonateand/or polycarbonate film or sheets. The diffuser can comprise glasssuch as opal glass, ground glass, patterned glass, and/or a combinationof such materials. The diffuser can also comprise other materials withvarying material properties and/or characteristics. The diffuser cancomprise one or more layers with different material properties and/orcharacteristics. For example, the diffuser can comprise, two or more,three or more, four or more, five or more, six or more, seven or more,or eight or more layers with different material properties and/orcharacteristics. Additionally, the diffuser can comprise one or morelayers with similar material properties and/or characteristics. Forexample, the diffuser can comprise, two or more, three or more, four ormore, five or more, six or more, seven or more, or eight or more layerswith similar material properties and/or characteristics.

The diffuser of the nose sensor 400 can diffuse emitted light prior toentering the tissue. The diffuser can advantageously spread out,disseminate, and/or scatter light exiting from the emitter into and/oraround a portion of a patient's body, for example the nose. This canpermit light originating from the emitter to pass through a wider regionor area of a patient's body, and thus better facilitate collection ofphysiological parameters (such as those discussed above). The detectorcan be sized and shaped to receive the optical radiation after itattenuates through tissue and fluids of a portion of a body. Diffusinglight prior to entering the tissue can be advantageous because the lightis allowed to pass through more tissue. This allows the light to samplemore of the body tissue before being detected. It also provides for moreeven and consistent light across a larger portion of tissue. Thediffusion of light by the diffuser of the nose sensor 400 can beperformed through a light diffusion layer on or proximate to the emitterstructure.

The size and/or shape of the diffuser can help to avoid edge effects.For example, the thickness and/or diameter of the diffuser can help toavoid edge effects. Similarly, the proximity of the diffuser relative tothe emitter can help to avoid edge effects. Such configurations canadvantageously help to desensitize the nose sensor 400 to geometricvariability. For example, the size and/or shape of the diffuser and/orthe positioning of the diffuser can allow the nose sensor 400 toaccommodate various nose shapes and/or sizes, and/or accurately measurea patient's physiological parameters when light is emitted from theemitter, diffused by the diffuser, transmitted through a portion of thepatient's body, and detected by the detector

As discussed above, the nose sensor 400 can include an emitter. Theemitter can be coupled to outer post 405C of the outer prong 404. Theouter post 405C can be formed or integral with the outer post 405A, theouter post 405B, and/or the outer prong 404. Alternatively, the outerpost 405C can be separate from or not integral with the outer post 405A,the outer post 405B, and/or the outer prong 404. The outer post 405C canbe configured to be inserted into a portion of the outer prong 404. Forexample, the outer post 405C can be inserted into an aperture (notshown) along the outer prong 404. The outer post 405C can be configuredto be secured to the outer prong 404 or other portion of the nose sensor400 via an adhesive, fastener, or another securement method. The outerpost 405C can form a flap. The flap can be rigid or substantially rigid.Alternatively, the flap can be flexible. The flap can be flexiblerelative to the outer posts 405A, 405B, which can be substantiallyrigid. As shown in at least FIGS. 19 and 21, the flap can be pulled,bent, and/or peeled away from a patient's nose 407 in use. In use, theemitter can be secured to an outer surface of the patient's nose 407, asdescribed below. Alternatively, in use, the emitter can be secured to aninner surface of the patient's nose 407. In some alternativeconfigurations, the nose sensor 400 does not include an outer post 405C.For example, the nose sensor 400 can have an inner prong 402 includingan inner post 403 and a detector, and an outer prong 404 with an outerpost 405A, an outer post 405B, and a coupling portion 420. Such aconfiguration for a nose sensor 400 can be used alongside a separateemitter which can attach to an inside or outside portion of a patient'snose to interact with the detector of nose sensor 400. Such an emittercan be electronically coupled to the detector through wiring or aflexible circuit, as discussed herein.

As discussed above, the outer post 405C can form a flap. The emitter canbe coupled with the flap. For example, the emitter can be coupled withan end of the flap. The emitter can be positioned on an inner and/orouter surface of the flap. The flap configuration can advantageouslyallow the nose sensor 400 to accommodate various nose geometries. Forexample, the flap can allow the emitter to be positioned approximatelyparallel to the detector in use. In use, the emitter can be positionedsuch that the emitter remains in alignment with the detector as the nosesensor 400 is attached to a patient. Thus, the emitter can remain inalignment with the detector regardless of the shape and/or size of thepatient's nose. The outer post 405C can have a length that is differentthan the length of the inner post 403. For example, the outer post 405Ccan have a shorter length than the length of the inner post 403.Alternatively, the outer post 405C can have a greater length than thelength of the inner post 403. A nose sensor 400 having an inner post 403with a different length than the outer post 405C can allow an emittercoupled to the outer post 405C to be offset or not aligned with adetector coupled to the inner post 403. Such an offset canadvantageously increase the path length between the emitter and thedetector. For example, such an offset can advantageously allow for lightemitted from the emitter to have to pass through more tissue beforearriving and being detected by the detector. Even though misalignmentbetween the emitter and the detector may result more scattering of lightemitted from the emitter and less emitted light getting to the detector,the misalignment and resulting increase in path length canadvantageously allow light to pass through more body tissue, which canresult in more accurate measurement of physiological parameters.

The emitter and/or the detector can be spaced away from an intermediateregion of the outer prong 404 and/or the inner prong 402, or otherregion of the inner prong 402 and/or the outer prong 404 that contactsthe patient's tissue. This can help to space the measurement location,for example the space between the emitter and the detector, from thepoints, areas, and/or regions where the nose sensor 400 or portionsthereof are secured to and/or contacting the patient. Spacing themeasurement location from these securement locations can help to reducefalse and/or inaccurate readings of physiological parameters such asthose discussed herein. For example, a pressure region created bycontact between the nose sensor 400 or portions thereof and thepatient's tissue at and/or proximate to these securement locations mayalter blood flow in the patient's tissue or otherwise affect the valuesof physiological parameters measured by the nose sensor 400. Thus, byspacing the emitter and/or the detector from points, areas, and/orregions where the nose sensor 400 or portions thereof are secured toand/or contacting the patient, the nose sensor 400 can allow for moreaccurate measurements of physiological parameters. As discussed above,the outer post 405C can be coupled with an emitter. The outer post 405Ccan be flexible. The outer post 405C can apply little or no pressure ona patient's nose when the outer post 405C and/or the emitter is securedto an inside or outside portion of a patient's nose. For example, theemitter can be coupled to the outer post 405C and the emitter can havean adhesive surrounding the emitter that helps secure the emitter and/orthe outer post 405C to an inside or outside portion of a patient's nose.In such configuration, the outer post 405C and/or the emitter canadvantageously apply little or no pressure to the patient's nose, whichcan allow for more accurate measurements of physiological parameters.

An open side of the emitter (for example, the side configured to facethe patient's tissue) can be secured to and/or positioned against anoutside surface of the patient's nose. The emitter and/or the detectorcan be secured to the patient's nose before, during, and/or aftersecurement of the outer prong 404 and/or the inner prong 402 to thepatient's nose. The outer prong 404 and/or the inner prong 402 can besecured to the patient's nose before the emitter and/or the detector issecured to the patient's nose. For example, the emitter can be placedapproximately aligned with the detector along an outer surface of thepatient's nose 407. Alternatively, the emitter can be placedapproximately aligned with the detector along an inner surface of thepatient's nose 407.

The emitter can include an adhesive that can be configured to couple theemitter with the patient's nose. For example, the adhesive can securethe emitter to the patient's nose at a position approximately alignedwith the detector. The emitter can include a liner. The liner can coverthe emitter when the emitter is not in use. The liner can help toprevent the emitter from inadvertently adhering to another object. Theliner can help to keep the emitter clean. The liner can help to maintainthe adhesive properties of the adhesive backing of the emitter andprevent errant readings due to detection of light before the nose sensor400 is in place. To secure the emitter to the patient, the liner can beremoved.

The nose sensor 400 can include a lens on and/or around the detector.This lens can advantageously help focus light into the detector. Forexample, the lens can help focus light transmitted through a portion ofa patient's body, such as a nose, and originating from the emitter. Thelens can comprise various materials. For example, the lens can compriseglass and/or plastic. The lens can also comprise various opticalrefractive properties. For example, the lens can vary in thickness,curvature, refractive index, focal length, and/or other properties. Thelens can be a simple lens. For example, the lens can comprise a singlepiece of transparent material. Alternatively, the lens can be a compoundlens. For example, the lens can comprise one or more simple lensesarranged about a common axis. For example, the lens can comprise two ormore, three or more, four or more, five or more, or six or more simplelenses arranged about a common axis. The lens can be paired with adiffuser to even out light distribution before detection and/or besurrounded by a black or dark colored border in order to block ambientstray light.

The nose sensor 400 can include wiring or a flexible circuit forelectronically coupling the emitter and the detector. The nose sensor400 can include wiring or a flexible circuit that couples the emitterand the detector and that is positioned within a portion of the nosesensor 400. For example, the nose sensor 400 can including wiring or aflexible circuit that connects to the emitter in an interior portion ofthe outer post 405C and that travels through an interior portion of theouter prong 404, passes up from the outer base 424 to the inner base 422and travels through an interior of the inner prong 402 and/or the innerpost 403 to connect to the detector. In such configurations, the wiringor flexible circuit can be configured to fit within interior portions ofthe outer prong 404, coupling portion 420, and/or inner post 403 of nosesensor 400. This can advantageously simplify the attachment and/orsecurement of the nose sensor 400. Alternatively, in someconfigurations, the wiring or flexible circuit can be configured to beoutside of interior portions of the nose sensor 400. For example, theemitter can be electronically coupled to the detector by wiring or aflexible circuit that travels outside the nose sensor 400 or componentsof the nose sensor 400. The nose sensor 400 can have an emitter and noouter post 405C. For example, the nose sensor 400 can have a detectorconnected to a flexible circuit on one end of the flexible circuit andcan have the other end of the flexible circuit connected to the emitter.In such configurations, the flexible circuit can connect to the detectorat an end of the inner post 403, pass through an interior portion of theinner post 403, inner prong 402, inner base 422, outer base 424, and/oran opening in the outer prong 404 and connect to the emitter. Thus, aportion of the flexible circuit can be confined or secured within aninterior portion of the nose sensor 400 and a portion of the flexiblecircuit connected to the emitter can be freely moveable outside the nosesensor 400 and can be secured to a portion of a patient's nose, such asan exterior portion.

As shown by FIG. 17, the nose sensor 400 can include a biasing member416. The biasing member 416 can include a spring, for example. Thespring can comprise various strength and/or stiffness properties, and/orother material properties. The biasing member 416 can bias the outerprong 404 towards the inner prong 402 and/or the inner prong 402 towardsthe outer prong 404. The biasing member 416 can help to secure the nosesensor 400 to the patient. To attach the nose sensor 400 to the patient,a force can be applied to the inner base 422 and the outer base 424 suchthat the inner base 422 and the outer base 424 rotate about the pivotpin 430 towards one another. This can allow the nose sensor 400 toeasily fit over the patient's nose. When no or minimal force is appliedto the inner base 422 and/or the outer base 424, the nose sensor 400 canbe secured to the patient's nose. The inner prong 402 can have aprotruding rim that extends outward toward the outer prong 404. Theinner prong 402 can have a recess configured to receive an end of thebiasing member 416. The protruding rim and/or recess can help confine,align, and/or secure an end of the biasing member 416 to the inner prong402. The outer prong 404 can have a protruding rim that extends outwardtoward the inner prong 402. The outer prong 404 can have a recessconfigured to receive an end of the biasing member 416. The protrudingrim and/or recess can help confine, align, and/or secure an end of thebiasing member 416 to the outer prong 404. The inner prong 402 and/orthe outer prong 404 can include two or more protruding rims or skirtsthat can secure a portion of the biasing member 416. The inner prong 402and/or the outer prong 404 can include two or more, three or more, fouror more, five or more, or six or more protruding rims or skirts. Forexample, the inner prong 402 and/or the outer prong 404 can include twoprotruding rims along a surface portion of the inner prong 402 and/orthe outer prong 404. The two protruding rims can permit a portion of thebiasing member 416 to at least partially fit within, and the twoprotruding rims can secure the portion of the biasing member 416 by asnap-fit, press-fit, and/or friction fit. The biasing member 416 can beadhered to a surface of the inner prong 402 and/or a surface of theouter prong 404. This can help secure an end of the biasing member 416to a surface of the inner prong 402 and/or a surface of the outer prong404. The biasing member 416 can be cylindrical (see FIG. 17).Alternatively, the biasing member 416 can be non-cylindrical.

FIGS. 23-25 illustrate an alternative biasing member 516 that can beincorporated into the nose sensor 400. The biasing member 516 can be aspring. The spring 516 can be configured to urge together and/or pushapart the inner prong 402 and the outer prong 404. As shown in at leastFIG. 17, the outer prong 404 can be rotatably connected to the innerprong 402 and/or the inner prong 402 can be rotatably connected to theouter prong 404. The spring 516 can be disposed between the inner prong402 and the outer prong 404 and can be adapted to create a pivot pointalong a portion of a patient's nose that is gripped between the innerand outer prongs 402, 404. This advantageously allows the joint 421 toexpand and/or retract so as to distribute force along the portion of thepatient's nose that is secured to the sensor 400, comfortably keepingthe portion in position without excessive force. The spring 516 can havecoils 518, a first leg 520, and a second leg 522. The first leg 520 canpress against the outer prong 404 or the inner prong 402. For example,when a portion of the nose sensor 400 is gripped, the first leg 520 canpress against the outer or inner prong 404, 402. The second leg 522 canpress against the outer prong 404 or the inner prong 402. For example,when a portion of the nose sensor 400 is gripped, second leg 522 canpress against the outer or inner prong 404, 402. The inner prong 402and/or the outer prong 404 can include recesses sized and shaped to fitat least a portion of the spring 516. For example, a portion of thefirst leg 520 can be configured to fit within a recess in the outerprong 404 to hold the first leg 520 in place. As another example, thesecond leg 522 can be configured to fit within a recess in the outerprong 404, or alternatively, the inner prong 402, to hold the second leg522 in place. The inner prong 402 and/or the outer prong 404 can includeprotrusions sized and shaped to secure at least a portion of the spring516. For example, a portion of the first leg 520 can be configured tofit between two protrusions or skirts that extend outward from a surfaceof the outer prong 404 or inner prong 402, thus holding the first leg520 in place. As another example, For example, a portion of the secondleg 522 can be configured to fit between two protrusions or skirts thatextend outward from a surface of the outer prong 404 or inner prong 402,thus holding the second leg 522 in place. As shown in FIGS. 23-25, thefirst leg 520 can extend in an opposite direction as the second leg 522.Alternatively, the coils 518 of the spring 516 can be configured and/orwound so that the first leg 520 extends in the same direction as thesecond leg 522. The first leg 520 can extend so that it is parallel orsubstantially parallel to the second leg 522. Alternatively, the firstleg 520 can extend so that it is non-parallel or perpendicular to thesecond leg 522.

Although this disclosure has been disclosed in the context of certainexamples, it will be understood by those skilled in the art that thepresent disclosure extends beyond the specifically disclosed examples toother alternative examples and/or uses of the disclosure and obviousmodifications and equivalents thereof. In addition, while a number ofvariations of the disclosure have been shown and described in detail,other modifications, which are within the scope of this disclosure, willbe readily apparent to those of skill in the art based upon thisdisclosure. It is also contemplated that various combinations orsub-combinations of the specific features and aspects of the examplesmay be made and still fall within the scope of the disclosure.Accordingly, it should be understood that various features and aspectsof the disclosure can be combined with or substituted for one another inorder to form varying modes of the disclosed.

Features, materials, characteristics, or groups described in conjunctionwith a particular aspect, or example are to be understood to beapplicable to any other aspect, or example described in this section orelsewhere in this specification unless incompatible therewith. All ofthe features disclosed in this specification (including any accompanyingclaims, abstract and drawings), and/or all of the steps of any method orprocess so disclosed, may be combined in any combination, exceptcombinations where at least some of such features and/or steps aremutually exclusive. The protection is not restricted to the details ofany foregoing examples of systems. The protection extends to any novelone, or any novel combination, of the features disclosed in thisspecification (including any accompanying claims, abstract anddrawings), or to any novel one, or any novel combination, of the stepsof any method or process so disclosed.

Furthermore, certain features that are described in this disclosure inthe context of separate implementations can also be implemented incombination in a single implementation. Conversely, various featuresthat are described in the context of a single implementation can also beimplemented in multiple implementations separately or in any suitablesubcombination. Moreover, although features may be described above asacting in certain combinations, one or more features from a claimedcombination can, in some cases, be excised from the combination, and thecombination may be claimed as a subcombination or variation of asubcombination.

Moreover, while operations may be depicted in the drawings or describedin the specification in a particular order, such operations need not beperformed in the particular order shown or in sequential order, or thatall operations be performed, to achieve desirable results. Otheroperations that are not depicted or described can be incorporated in theexample methods and processes. For example, one or more additionaloperations can be performed before, after, simultaneously, or betweenany of the described operations. Further, the operations may berearranged or reordered in other implementations. Those skilled in theart will appreciate that the actual steps taken in the processesillustrated and/or disclosed may differ from those shown in the figures.Depending on the system, certain of the steps described above may beremoved, others may be added. Furthermore, the features and attributesof the specific examples disclosed above may be combined in differentways to form additional examples of systems, all of which fall withinthe scope of the present disclosure. Also, the separation of varioussystem components in the implementations described above should not beunderstood as requiring such separation in all implementations, and itshould be understood that the described components and systems cangenerally be integrated together in a single product or packaged intomultiple products.

For purposes of this disclosure, certain aspects, advantages, and novelfeatures are described herein. Not necessarily all such advantages maybe achieved in accordance with any particular example. Thus, forexample, those skilled in the art will recognize that the disclosure maybe embodied or carried out in a manner that achieves one advantage or agroup of advantages as taught herein without necessarily achieving otheradvantages as may be taught or suggested herein.

Conditional language, such as “can,” “could,” “might,” or “may,” unlessspecifically stated otherwise, or otherwise understood within thecontext as used, is generally intended to convey that certain systemsinclude, while other systems do not include, certain features, elements,and/or steps. Thus, such conditional language is not generally intendedto imply that features, elements, and/or steps are in any way requiredfor one or more systems or that one or more systems necessarily includelogic for deciding, with or without user input or prompting, whetherthese features, elements, and/or steps are included or are to beperformed in any particular system.

Language of degree used herein, such as the terms “approximately,”“about,” “generally,” and “substantially” as used herein represent avalue, amount, or characteristic close to the stated value, amount, orcharacteristic that still performs a desired function or achieves adesired result. For example, the terms “approximately”, “about”,“generally,” and “substantially” may refer to an amount that is withinless than 10% of, within less than 5% of, within less than 1% of, withinless than 0.1% of, and within less than 0.01% of the stated amount.Additionally, as used herein, “gradually” has its ordinary meaning(e.g., differs from a non-continuous, such as a step-like, change).

The scope of the present disclosure is not intended to be limited by thespecific disclosures of the systems in this section or elsewhere in thisspecification, and may be defined by claims as presented in this sectionor elsewhere in this specification or as presented in the future. Thelanguage of the claims is to be interpreted broadly based on thelanguage employed in the claims and not limited to the examplesdescribed in the present specification or during the prosecution of theapplication, which examples are to be construed as non-exclusive.

1. (canceled)
 2. A noninvasive optical based physiological monitoringdevice configured to measure one or more physiological parameters of auser at a nasal measurement site of the user, the noninvasive opticalbased physiological monitoring device comprising: an emitter configuredto emit light of one or more wavelengths into tissue at a nasalmeasurement site of a user; a detector configured to detect at least aportion of the emitted light after attenuation through the tissue, thedetected light usable to determine a physiological parameter by aphysiological measurement device; a first post configured to bepositioned on one of an inner or outer side of the nasal measurementsite of the user, the first post comprising a first end, a second end,and a length extending between the first and second ends, wherein thefirst post is curved along the length in a first direction about a firstaxis; a second post and a third post, the second and third posts spacedfrom one another and configured to be positioned on the other one of theinner or outer side of the nasal measurement site of the user, each ofthe second and third posts comprising a first end, a second end, and alength extending between the first and second ends of each of the secondand third posts, wherein each of the second and third posts is curvedalong the length of each of the second and third posts in a seconddirection about a second axis, wherein the second axis is generallyparallel to the first axis and wherein the first and second directionsare the same; a coupling portion connected to and positioned at leastpartially between the first, second, and third posts, the couplingportion configured to position the first post away from both of thesecond and third posts to allow the noninvasive optical basedphysiological monitoring device to secure around a portion of the nasalmeasurement site of the user, wherein the emitter is coupled to thecoupling portion, wherein the detector is coupled to the first post. 3.The noninvasive optical based physiological monitoring device of claim2, wherein the first end of the first post is connected to the couplingportion, and wherein the detector is coupled to the second end of thefirst post.
 4. The noninvasive optical based physiological monitoringdevice of claim 2, wherein the coupling portion comprises a first endconnected to the first post, a second end connected to the second andthird posts, and a length extending between the first and second ends ofthe coupling portion, wherein the coupling portion is curved along thelength of the coupling portion.
 5. The noninvasive optical basedphysiological monitoring device of claim 2, further comprising aflexible flap having a first end coupled to the coupling portion and asecond end opposite the first end of the flexible flap, wherein theemitter is coupled to the second end of the flexible flap.
 6. Thenoninvasive optical based physiological monitoring device of claim 2,wherein the second and third posts form a generally U-shape along aplane extending between the second and third posts.
 7. The noninvasiveoptical based physiological monitoring device of claim 2, wherein saidphysiological parameter is SpO₂.
 8. The noninvasive optical basedphysiological monitoring device of claim 2, wherein said physiologicalparameter is pulse rate.
 9. A noninvasive optical based physiologicalmonitoring device configured to measure one or more physiologicalparameters of a user at a nasal measurement site of the user, thenoninvasive optical based physiological monitoring device comprising: anemitter configured to emit light of one or more wavelengths into tissueat a nasal measurement site of a user; a detector configured to detectat least a portion of the emitted light after attenuation through thetissue, the detected light usable to determine a physiological parameterby a physiological measurement device; a first post configured to bepositioned on one of an inner or outer side of the nasal measurementsite of the user, the first post comprising a first end, a second end,and a length extending between the first and second ends, wherein thefirst post is curved along the length in a first direction; a secondpost and a third post, the second and third posts spaced from oneanother and configured to be positioned on the other one of the inner orouter side of the nasal measurement site of the user, each of the secondand third posts comprising a first end, a second end, and a lengthextending between the first and second ends of each of the second andthird posts, wherein each of the second and third posts is curved alongthe length of each of the second and third posts in a second direction;a coupling portion connected to the first, second, and third posts, thecoupling portion configured to position the first post away from both ofthe second and third posts, wherein the emitter is coupled to thecoupling portion, and wherein the detector is coupled to the first post.10. The noninvasive optical based physiological monitoring device ofclaim 9, wherein the first end of the first post is connected to thecoupling portion, and wherein the detector is coupled to the second endof the first post.
 11. The noninvasive optical based physiologicalmonitoring device of claim 9, wherein the coupling portion comprises afirst end connected to the first post, a second end connected to thesecond and third posts, and a length extending between the first andsecond ends of the coupling portion, wherein the coupling portion iscurved along the length of the coupling portion.
 12. The noninvasiveoptical based physiological monitoring device of claim 9, wherein thefirst and second directions are the same.
 13. The noninvasive opticalbased physiological monitoring device of claim 9, wherein the first andsecond directions are different.
 14. The noninvasive optical basedphysiological monitoring device of claim 9, wherein said physiologicalparameter is SpO₂.
 15. The noninvasive optical based physiologicalmonitoring device of claim 9, wherein said physiological parameter ispulse rate.
 16. A noninvasive optical based physiological monitoringdevice configured to measure one or more physiological parameters of auser at a nasal measurement site of the user, the noninvasive opticalbased physiological monitoring device comprising: an emitter configuredto emit light of one or more wavelengths into tissue at a nasalmeasurement site of a user; a detector configured to detect at least aportion of the emitted light after attenuation through the tissue, thedetected light usable to determine a physiological parameter by aphysiological measurement device; a first post configured to bepositioned on one of an inner or outer side of the nasal measurementsite of the user, the first post comprising a first end, a second end,and a length extending between the first and second ends, wherein thefirst post is curved along at least a portion of the length in a firstdirection; a second post and a third post, the second and third postsspaced from one another and configured to be positioned on the other oneof the inner or outer side of the nasal measurement site of the user,each of the second and third posts comprising a first end, a second end,and a length extending between the first and second ends of each of thesecond and third posts, wherein each of the second and third posts iscurved along at least a portion of the length of each of the second andthird posts in a second direction; a coupling portion connected to thefirst, second, and third posts, the coupling portion configured toposition the first post away from both of the second and third posts.17. The noninvasive optical based physiological monitoring device ofclaim 16, wherein the first and second directions are the same.
 18. Thenoninvasive optical based physiological monitoring device of claim 16,wherein the at least the portion of the length of the first post iscurved in the first direction about a first axis, and wherein the atleast the portion of the length of each of the second and third posts iscurved in the second direction about a second axis that is generallyparallel to the first axis.
 19. The noninvasive optical basedphysiological monitoring device of claim 16, wherein the first post iscurved along an entirety of the length of the first post, and whereineach of the second and third posts is curved along an entirety of thelength of each of the second and third posts.
 20. The noninvasiveoptical based physiological monitoring device of claim 16, wherein thefirst end of the first post is connected to the coupling portion, andwherein the detector is coupled to the second end of the first post. 21.The noninvasive optical based physiological monitoring device of claim16, wherein said physiological parameter is SpO₂.